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      1 Snapshot 2.99.917 (2014-12-21)
      2 ==============================
      3 3 months drifted by whilst I looked elsewhere for bugs.. The highlight of
      4 bugs fixed here are a couple of workarounds required for Broadwell and
      5 making sure that the rasterisation code is symmetric under inversions.
      6 However, as a couple of crashers slipped through into 2.99.916 (though
      7 not actual regressions in 2.99.916 per se) and 3 months have passed, we
      8 should make one more snapshot before an imminent release.
      9 
     10  * Beware of recomputing the clear hint in the middle of MI recursion
     11    https://bugs.freedesktop.org/show_bug.cgi?id=77074
     12 
     13  * Fix crash from rendering an empty Glyph string under PRIME as the
     14    secondary driver
     15 
     16  * Restore application of default monitor options to the first output,
     17    a regression in 2.99.915 and the MST support
     18    https://bugs.gentoo.org/show_bug.cgi?id=522500
     19 
     20  * Finally fix ZaphodHeads blocking on waiting for flip completion events.
     21    Before kernel 3.19, O_NONBLOCK support is broken and so we must avoid
     22    reading if we are not expecting an event.
     23 
     24  * Backwards compatibility fix for fake triple buffering with PRIME and
     25    Xorg-1.15
     26    https://bugs.freedesktop.org/show_bug.cgi?id=85144#c12
     27 
     28  * Fix a rendering issue with output rotation and software fallbacks.
     29    https://bugs.freedesktop.org/show_bug.cgi?id=84653
     30 
     31  * Enable MST discovery even without udev support
     32    https://bugs.freedesktop.org/show_bug.cgi?id=84718
     33 
     34  * Fix TearFree operation after the GPU is wedged
     35    https://bugs.freedesktop.org/show_bug.cgi?id=85058
     36 
     37  * Fix projective sampling on gen6+.
     38 
     39  * Fix rendering and corruption with gen8.
     40    https://bugs.freedesktop.org/show_bug.cgi?id=84958
     41    https://bugs.freedesktop.org/show_bug.cgi?id=83207
     42    https://bugs.freedesktop.org/show_bug.cgi?id=79053
     43    https://bugs.freedesktop.org/show_bug.cgi?id=81583
     44 
     45  * Fix crash when using Xinerama.
     46    https://bugs.freedesktop.org/show_bug.cgi?id=87207
     47 
     48  * Fix rendering of right-to-left or bottom-to-top PolySegments in UXA
     49 
     50 
     51 Snapshot 2.99.916 (2014-09-08)
     52 ==============================
     53 Quick update for MST in UXA - we need to hook up the RandR outputs for
     54 dynamically added connectors.
     55 
     56 
     57 Snapshot 2.99.915 (2014-09-08)
     58 ==============================
     59 A significant change to UXA to enable MST and to keep it working on recent
     60 kernels needs some soaking before a major release, and the usual
     61 plethora of bugfixes. One other feature is the support for hardware
     62 rotations on very recent kernels.
     63 
     64  * Handle rotated scanouts that are all clear correctly. The region to
     65    update was not being computed correctly, overdrawing the wrong CRTC.
     66    https://bugs.freedesktop.org/show_bug.cgi?id=81820
     67 
     68  * Reset cursor images after rotation and size changes
     69    https://bugs.freedesktop.org/show_bug.cgi?id=81886
     70    https://bugs.freedesktop.org/show_bug.cgi?id=82273
     71    https://bugs.freedesktop.org/show_bug.cgi?id=82337
     72 
     73  * Handle stale DRI2 buffers and Client errors more gracefully
     74 
     75  * Fallback if we fail to render a glyph onto a too-large surface, e.g.
     76    direct rendering of glyphs onto extended desktops with gen2/gen3.
     77    https://bugs.archlinux.org/task/40949
     78 
     79  * Further work to enable tiled rendering onto large surfaces in
     80    severely aperture and memory constrained devices (e.g. gen2/gen3)
     81 
     82  * Honour the Primary option from xorg.conf and mark that as the RandR
     83    primary.
     84    https://bugs.freedesktop.org/show_bug.cgi?id=82193
     85    https://bugs.freedesktop.org/show_bug.cgi?id=82205
     86 
     87  * Fix another Client-Window DRI2 close race
     88    https://bugs.freedesktop.org/show_bug.cgi?id=82979
     89 
     90  * Fix incorrect discarding of GPU damage when copying over the TearFree
     91    scanout - which caused a flicker in rapidly updated elements (like
     92    simple video panes).
     93    https://bugs.freedesktop.org/show_bug.cgi?id=81973
     94 
     95 
     96 Snapshot 2.99.914 (2014-07-23)
     97 ==============================
     98 And a brown paper bag to hide the rebuilding from the tarball with
     99 'autoreconf -fi' error that arose from not distributing the libobj/
    100 directory.
    101 
    102 
    103 Snapshot 2.99.913 (2014-07-23)
    104 ==============================
    105 This should be it... A few fixes from testing the new code, we should be
    106 ready for the final release. However, we do have one standout feature in
    107 this snapshot, we now officially recognise HD Graphics 5300/5500/5600,
    108 Iris Graphics 6100 and Iris Pro Graphics 6200/P6300 (formerly known as
    109 Broadwell).
    110 
    111  * Check the window actually covers the CRTC before doing a single CRTC flip,
    112    and then restore the right framebuffer after completing CRTC flips.
    113    Otherwise we would detect an error and disable an output under TearFree
    114    Regression in 2.99.912
    115    https://bugs.freedesktop.org/show_bug.cgi?id=80191
    116 
    117  * Fix framebuffer creation on kernels older than 3.11
    118    Regression in 2.99.912
    119 
    120  * Check that the damage still exists after implicit reduction
    121    Regression in 2.99.912
    122    https://bugs.freedesktop.org/show_bug.cgi?id=77436
    123 
    124  * Fix direction flags for fallback composited CopyAreas which
    125    caused scrolling corruption in a few configurations
    126    Regression from 2.20.0
    127    https://bugs.freedesktop.org/show_bug.cgi?id=79843
    128 
    129  * Do not throw away damage if there is no redundant copy
    130    https://bugs.freedesktop.org/show_bug.cgi?id=79992
    131 
    132  * Check clipping on PolyRect before discarding the clipped damage
    133    Regression from 2.99.903
    134    https://bugs.freedesktop.org/show_bug.cgi?id=79992
    135 
    136  * Fix hints for GLXPixmapa, as these are never swapped and so
    137    miss invalidating the hints on SwapBuffers with the result
    138    that they are often presumed blank
    139    Regression in 2.99.912
    140    https://bugs.freedesktop.org/show_bug.cgi?id=79999
    141 
    142  * Fix incoherent choice of source bo when constructing 8x8 tiles,
    143    incorrect pattern origin when extracting, and then fix the
    144    alignment of colour patterns for BLT operations
    145    https://bugs.freedesktop.org/show_bug.cgi?id=80033
    146 
    147  * Disable blending with the render engine on snoopable buffers
    148    https://bugs.freedesktop.org/show_bug.cgi?id=80253
    149 
    150  * Restore throttling to prevent client lag under heavy GPU load
    151    Regression from 2.21.10
    152    https://bugs.freedesktop.org/show_bug.cgi?id=77436
    153 
    154  * Use ClientGone for notifications on shared DRI2 windows to prevent
    155    rare crashes due to use-after-free of the swap requests
    156    https://bugs.freedesktop.org/show_bug.cgi?id=80157
    157 
    158  * Ensure the mmaped CPU bo is idle before migrating damage
    159    https://bugs.freedesktop.org/show_bug.cgi?id=80560
    160 
    161  * Fix incorrect clipping by the render engine for large DRI2 windows
    162 
    163  * Ensure that the aperture tiling fallbacks are bounded
    164 
    165  * Validate parameter to xf86-video-intel-backlight-helper more carefully
    166    (CVE-2014-4910)
    167 
    168  * Fix slaved scanouts for reverse optimus, though rotated slaves will
    169    require further patches to Xorg.
    170    https://bugs.freedesktop.org/show_bug.cgi?id=81383
    171 
    172  * Fix build without Composite extension.
    173 
    174  * Fix build without gettline().
    175 
    176  * UXA: Allocate and resize frontbuffer consistently to pass sanity checks
    177    https://bugs.freedesktop.org/show_bug.cgi?id=80088
    178 
    179  * UXA: Report cached backlight value when the output is off (like sna)
    180    https://bugzilla.redhat.com/show_bug.cgi?id=1032978
    181 
    182  * UXA: Mark outputs as off before the kernel does (like sna)
    183    This will prevent the internal panel from starting up blank in some
    184    multi-monitor configurations
    185    https://bugzilla.redhat.com/show_bug.cgi?id=1103806
    186 
    187 Note that the DRI2 exchange mechanism introduced in 2.99.912 exposes bugs
    188 in some compositors, at least kwin and comptom, which discard DRI2 buffer
    189 invalidates rather than resourcing their texture. For example,
    190 https://bugs.kde.org/show_bug.cgi?id=336589
    191 
    192 Note that the improved triple buffering introduced in DRI2 requires a patch
    193 to Xorg (now released upstream) to prevent crashes with DRI_PRIME.
    194 https://bugs.freedesktop.org/show_bug.cgi?id=80001
    195 
    196 Note that DRI3/Present require tracking the relevant development trees for
    197 mesa and the xserver as they are very much still under early testing. Also
    198 be aware that Mesa provides no support for explicit fencing so Damage
    199 tracking between compositors and clients is unserialised.
    200 
    201 
    202 Snapshot 2.99.912 (2014-06-10)
    203 ==============================
    204 A final round of features. We have everything from support for variable
    205 cursor sizes, support for the DRI3 and Present extensions, improved DRI2
    206 support, support for Xserver 1.16, userptr from kernel 3.16, and
    207 precursory support for DP multistream transport,
    208 
    209  * Avoid discarding dirty pixels when promoting a migration to cover the
    210    whole pixmap.
    211    Regression in 2.99.911
    212    https://bugs.freedesktop.org/show_bug.cgi?id=77063
    213    https://bugs.freedesktop.org/show_bug.cgi?id=77178
    214 
    215  * Avoid overextending degenerate lines (and consequentially accessing
    216    pixels outside of our damaged area).
    217    https://bugs.freedesktop.org/show_bug.cgi?id=77074
    218 
    219  * Fix subpixel glyph rendering on gen2 devices (830-865 chipsets)
    220    Regression in 2.99.911
    221    https://bugs.freedesktop.org/show_bug.cgi?id=77201
    222 
    223  * Share the global pixman glyph cache between ZaphodHeads
    224    https://bugs.freedesktop.org/show_bug.cgi?id=54707
    225 
    226  * Light up all connected outputs, even if their status is unknown, on
    227    takeover from fbcon. This prevents loss of display after a resume
    228    on recent kernels, for example.
    229    https://bugs.freedesktop.org/show_bug.cgi?id=77768
    230 
    231  * Show the video overlay (when supported by the hardware) across all
    232    outputs.
    233    https://bugs.freedesktop.org/show_bug.cgi?id=77802
    234 
    235  * Do not discard damage when performing "BLT" spans inplace with the CPU.
    236    Regression from 2.20.10
    237 
    238  * Avoid discarding IO buffers too early during their preparation for a
    239    new batch
    240    https://bugs.freedesktop.org/show_bug.cgi?id=79238
    241 
    242  * Fix fallback handling for displaying large scaled framebuffers (that
    243    are too large to be scaled by the GPU in a single pass)
    244    https://bugs.freedesktop.org/show_bug.cgi?id=79320
    245 
    246  * Listen to external modifications of backlight value and propagate
    247    the notifications to RandR clients. This should make the GUI report
    248    ACPI keypresses to change the backlight correctly.
    249    https://bugs.freedesktop.org/show_bug.cgi?id=79699
    250 
    251  * UXA: fix pageflips with 3 heads.
    252 
    253  * UXA: do not report a BadMatch error for DRI2GetMsc - as clients are
    254    often unprepared and die when they get the unexpected error.
    255 
    256 
    257 Snapshot 2.99.911 (2014-03-19)
    258 ==============================
    259 Hans de Geode has been working on making the Xserver work without
    260 privileges under the supervision of systemd/logind. This necessitated a
    261 few new features for us: server fds (where we are passed which fd to use
    262 to talk to our device by the Xserver who may in turn receive it from
    263 logind or other host) and a small backlight helper so that we can continue
    264 to provide a RandR backlight property when running without root privileges.
    265 
    266  * Flush when changing blend modes on Ironlake, or else single glyphs
    267    are sometimes rendered incorrectly
    268    Regression from 2.20.15
    269    https://bugs.freedesktop.org/show_bug.cgi?id=74882
    270 
    271  * Fix pixmap offsets for pixman fallbacks onto Composite redirected
    272    windows
    273    https://bugs.freedesktop.org/show_bug.cgi?id=73811
    274 
    275  * Fix blending onto 8-bit destinations, typically used for generating
    276    masks in complex Render operations, on gen2
    277    https://bugs.freedesktop.org/show_bug.cgi?id=75818
    278 
    279  * Handle failure to create DRI bo more carefully. For example on gen3,
    280    the DDX supports pixmaps that are much, much larger than OpenGL can
    281    use and do not support the tiling modes that we request for OpenGL.
    282    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1289049
    283 
    284  * Fix a bookkeeping bug with proxy buffers that are marked active but
    285    not actually inserted into a request (so they end up permanently
    286    active and confuse everybody).
    287    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1289923
    288 
    289  * Actually turn off displays with DPMS off for UXA.
    290    Regression from 2.99.903, but requires
    291 
    292    kernel commit c9976dcf55c8aaa7037427b239f15e5acfc01a3a
    293    Author: Chris Wilson <chris (a] chris-wilson.co.uk>
    294    Date:   Sun Sep 29 19:15:07 2013 +0100
    295 
    296        drm/i915: Only apply DPMS to the encoder if enabled
    297 
    298    instead for correct behaviour on Haswell.
    299    https://code.google.com/p/chromium/issues/detail?id=341135
    300 
    301 
    302 Snapshot 2.99.910 (2014-02-10)
    303 ==============================
    304 Another latent bug exposed by recent changes merit another snapshot for
    305 final testing.
    306 
    307   * Only discard damage when overwriting the dirty CPU bo, instead
    308     of discarding damage that will be shown!
    309 
    310   * Reset operation state when switching between glyph caches.
    311     https://bugs.freedesktop.org/show_bug.cgi?id=74494
    312 
    313   * Fully reinitialise pixmaps allocated from the freed cache. Fixes
    314     a potential issue (crash or misrendering) when using some compositors.
    315     https://bugs.freedesktop.org/show_bug.cgi?id=74550
    316 
    317   * Do not expose the TexturedVideo adaptor in UXA when it is disabled
    318     either due to a hung GPU or explicitly disabled by the user.
    319 
    320   * Restore the pipe stall when changing CC state on gen6, otherwise
    321     the GPU may not flush intermediate results from all EU resulting
    322     in render corruption (usually the occasional black box).
    323     Regression from 2.99.906
    324     https://bugs.freedesktop.org/show_bug.cgi?id=7237
    325 
    326 
    327 Snapshot 2.99.909 (2014-02-01)
    328 ==============================
    329 Pass the brown paper bag. Ridiculously stupid bug in last minute coding.
    330 
    331   * Add Xv support using glamor acceleration in addition to adaptors
    332     provided by the UXA backend.
    333 
    334   * Fix overeager discarding of CPU damage
    335     Regression in 2.99.908 :(
    336     https://bugs.freedesktop.org/show_bug.cgi?id=74327
    337 
    338 
    339 Snapshot 2.99.908 (2014-01-31)
    340 ==============================
    341 A couple of regressions dashed the hopes that .907 was to be the final
    342 release candidate, so time to start the cycle again after applying a few
    343 more bugfixes.
    344 
    345   * Fix invalid pageflipping of GLXPixmaps by UXA.
    346     https://bugs.freedesktop.org/show_bug.cgi?id=73282
    347 
    348   * Consistently treat DPMS Suspend/Standy as Off, otherwise we may
    349     incorrectly restore the backlight in UXA.
    350 
    351   * Fix disabling the backlight in UXA when querying the value whilst off
    352     https://bugs.freedesktop.org/show_bug.cgi?id=73181.
    353 
    354   * Invalidate between every operation if rendering into the source or mask.
    355     Fixes regression in 2.99.907 on Ivybridge (seen in KDE)
    356     https://bugs.freedesktop.org/show_bug.cgi?id=73208
    357 
    358   * Check for available batch buffer state before restoring state on gen4,
    359     otherwise we overwrite surface state with commands and cause a GPU hang.
    360     https://bugs.freedesktop.org/show_bug.cgi?id=73348
    361 
    362   * Prevent an invalid free by TearFree
    363     https://bugs.freedesktop.org/show_bug.cgi?id=73469
    364 
    365   * Fix confusion in TearFree when it tried to pageflip to a stale bo
    366     https://bugs.freedesktop.org/show_bug.cgi?id=70905
    367 
    368   * Initialise TearFree contents with the current frontbuffer upon creation,
    369     otherwise old content may be visible for significant fractions of a
    370     second after resume or DPMS on
    371     https://bugs.freedesktop.org/show_bug.cgi?id=73842
    372 
    373   * Nullify the old pointer into a CPU mmapping of the bo when promoting it
    374     on the GPU. Eventually that old pointer becomes invalid and will cause
    375     the Xserver to crash.
    376     Fixes regression in 2.99.906
    377     https://bugs.freedesktop.org/show_bug.cgi?id=73351
    378 
    379   * Restore the serialNumber on the GC correctly after falling back to
    380     software. This was seen to cause corruption with Wine.
    381     https://bugs.freedesktop.org/show_bug.cgi?id=73856
    382 
    383   * Do not ignore CPU damage on a pixmap unless the Composite operation
    384     will completely overwrite it. This was observed in xfce4.
    385     https://bugs.freedesktop.org/show_bug.cgi?id=69528
    386 
    387   * Skip fake outputs during initial probe as they can cause a NULL pointer
    388     dereference.
    389     https://bugs.freedesktop.org/show_bug.cgi?id=73981
    390 
    391   * Fix rendering of dashed zero-width lines onto 24bit buffers
    392     https://bugzilla.redhat.com/show_bug.cgi?id=1059152
    393 
    394   * Cap the freed Pixmap cache and reuse it more often
    395     Fixes a regression in 2.99.907 that caused the memory used by X to
    396     grow until it was cleaned up during server regreneration
    397     https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1272338
    398 
    399 
    400 Snapshot 2.99.907 (2013-12-30)
    401 ==============================
    402 The highlight here is that things seem to be quietening down on the bug
    403 reporting front. All is not quiet as you will see below, and maybe it is
    404 just the holiday season that is approaching*, but there has been a
    405 remarkable falloff in bug reports. Lets hope this trend holds and we can
    406 make a stable release shortly!
    407 
    408 * This was intended to be sent a couple of weeks ago and the holiday season
    409 has been very quiet....
    410 
    411 Oh, and acceleration support for Intel's next generation of
    412 integrated processor graphics has landed, codenamed Broadwell.
    413 
    414  * Fix potential X server infinite recursion (crash) from a gen2 bug fix
    415    Regression in 2.99.906
    416    https://bugs.freedesktop.org/show_bug.cgi?id=71605
    417 
    418  * Workaround a missing pipeline flush within Ivybridge, that would
    419    leave black rectangles randomly over the output
    420    https://bugs.freedesktop.org/show_bug.cgi?id=68410
    421 
    422  * Fix tiled fills. gen2-3 and gen4+ had two different bugs that
    423    both broke rendering with small 8x8 patterns in some circumstances
    424    https://bugs.freedesktop.org/show_bug.cgi?id=71260
    425 
    426  * Fix reads from a cropped video image using a packed pixel format.
    427 
    428  * Another clear the clear hint after DRI2 SwapBuffers, like the bug fixed
    429    in 2.99.903. Failure to clear the hint would cause read backs of the
    430    frontbuffer (Xvnc) to be blank.
    431    https://bugs.freedesktop.org/show_bug.cgi?id=72194
    432 
    433  * Disable VSync on Baytrail
    434    https://bugs.freedesktop.org/show_bug.cgi?id=69869
    435 
    436  * Handle partial uploads with TearFree correctly
    437    https://bugs.freedesktop.org/show_bug.cgi?id=72343
    438    https://bugs.freedesktop.org/show_bug.cgi?id=72430
    439 
    440  * Avoid recusing through DRI event handlers whilst processing TearFree,
    441    leading to a double free (and memory corruption)
    442    https://bugs.freedesktop.org/show_bug.cgi?id=72690
    443 
    444  * Hide the gen4 render corruption by crippling the GPU
    445    https://bugs.freedesktop.org/show_bug.cgi?id=55500
    446 
    447 
    448 Snapshot 2.99.906 (2013-11-13)
    449 ==============================
    450 Several stability fixes required after the recent tweaking of the core
    451 mechanics to handle the updated TearFree and attempting to make static
    452 analyzers happy.
    453 
    454  * Fix damage handling when rendering to a partially damaged GPU surface.
    455    Regression in 2.99.905
    456    https://bugs.freedesktop.org/show_bug.cgi?id=70527
    457 
    458  * Use asprintf() instead of sprintf()
    459    Regression in 2.99.905
    460    https://bugs.freedesktop.org/show_bug.cgi?id=70835
    461 
    462  * Improve accounting for fence overallocation on older gen2/3, and
    463    improve the tiling mechanism to fit into the same aperture constraints
    464    https://bugs.freedesktop.org/show_bug.cgi?id=70924
    465 
    466  * Add an extra GPU flush on Sandybridge to fix some rare font corruption
    467 
    468  * Rasterise lines through all clip boxes
    469    https://bugs.freedesktop.org/show_bug.cgi?id=70802
    470 
    471  * Fix regression from stricter handling of failures to move a GC to the GPU
    472    Regression in 2.99.905
    473    https://bugs.freedesktop.org/show_bug.cgi?id=71415
    474 
    475  * Fix various fail along the memcpy_xor paths, including inadequate error
    476    handling and integer overflow
    477    https://bugs.freedesktop.org/show_bug.cgi?id=70527
    478 
    479  * Fix outside-of-target stipple uploads
    480    https://bugs.launchpad.net/bugs/1247785
    481 
    482  * Fix clip detection for long glyphs
    483    Incomplete bug fix (causing a regression) in 2.99.905
    484    https://bugs.freedesktop.org/show_bug.cgi?id=70527
    485 
    486  * Fix VSync for the render engine (Xv) on Haswell
    487    https://bugs.freedesktop.org/show_bug.cgi?id=70527
    488 
    489 
    490 Snapshot 2.99.905 (2013-10-23)
    491 ==============================
    492 The highlight for this snapshot is the extension of TearFree to support
    493 transformed outputs, along with some polishing to eliminate its impact
    494 upon input and output latency. As always, thanks to everyone who have
    495 been testing, reporting bugs and helping to improve the stability before
    496 release.
    497 
    498  * Prevent a crash when starting with a user specified mode or position
    499 
    500  * Prevent some crashes in UXA after allocation failure
    501 
    502  * Stop marking the user's preferred backlight value as 0 if the
    503    backlight property is queried whilst the connector is disabled
    504    https://bugs.freedesktop.org/show_bug.cgi?id=70406
    505 
    506  * Pad GETCONNECTOR ioctl for compatibility between 32/64-bit userspace
    507    and kernel
    508 
    509  * Handle long glyph runs correctly
    510    https://bugs.freedesktop.org/show_bug.cgi?id=70541
    511 
    512  * Fix clipping of stippled rectangles against clip regions
    513    https://bugs.freedesktop.org/show_bug.cgi?id=67865
    514 
    515  * Support TearFree rendering of rotated outputs
    516    https://bugs.freedesktop.org/show_bug.cgi?id=22969
    517 
    518 
    519 Snapshot 2.99.904 (2013-10-09)
    520 ==============================
    521 There is one more feature planned to be completed for 3.0, so time for a
    522 snapshot beforehand to push out the bug fixes from the last week.
    523 
    524  * Fix video output using sprites when changing the image size
    525 
    526  * Apply more restrictive tile constraints for 915g class devices
    527    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1232546
    528 
    529  * Ensure all overlapping rectangles are drawn for XRenderFillRectangles
    530    https://bugs.freedesktop.org/show_bug.cgi?id=66313
    531 
    532  * Fix trapezoid clipping against the left-edge
    533    https://bugs.freedesktop.org/show_bug.cgi?id=69469
    534 
    535  * Prevent discarding active upload buffers, causing glitches in chromium
    536    https://bugs.freedesktop.org/show_bug.cgi?id=66990
    537 
    538  * Prevent specifying a negative timeout to select if the BlockHandler
    539    takes too long to update the display
    540 
    541  * Promote the Ironlake pipecontrol to be a full pipeline flush to
    542    prevent render cache corruption
    543    https://bugs.freedesktop.org/show_bug.cgi?id=51422
    544 
    545  * Never pass an invalid trapezoid to pixman
    546    https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1197921
    547 
    548  * Prevent out-of-bounds access by overassigning work amongst threads
    549    https://bugs.freedesktop.org/show_bug.cgi?id=70204
    550 
    551  * Make sure the current mode is always listed amongst the output modes
    552    https://bugs.freedesktop.org/show_bug.cgi?id=70132
    553 
    554  * Build fixes for 1.14.99.2
    555 
    556 
    557 Snapshot 2.99.903 (2013-09-28)
    558 ==============================
    559 Lots more stabilization work, not yet peaceful enough to christen 3.0. We
    560 have everything ranging from build fixes for systems like Suse Linux
    561 Enterprise Desktop that like to backport hardware enablement to ancient
    562 packages, to fixes for hardware enabling, and some more performance tuning.
    563 
    564  * Fix VSync on Haswell.
    565    https://bugs.freedesktop.org/show_bug.cgi?id=69119
    566 
    567  * Disable Y-tiling on gen4 - it too frequently leads to instability.
    568    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1222203
    569 
    570  * Disable same EDID detection based on property id - the kernel likes
    571    to reuse ids leading to a failure to detect the right modes on a monitor
    572    change.
    573 
    574  * Avoid issuing multiple DPMS requests to the same encoder (alised to
    575    multiple connectors) to avoid upsetting Haswell and leaving the
    576    screens blank.
    577 
    578  * Honour the user preferrence for the initial mode, even if they are
    579    being silly
    580    https://bugzilla.novell.com/show_bug.cgi?id=841696
    581 
    582  * Clear the clear hint when apply DRI updates - to prevent some
    583    screenshots from GL windows being left blank.
    584    https://bugs.freedesktop.org/show_bug.cgi?id=69730
    585 
    586  * Prevent a NULL dereference from trying to undo an non-existent buffer
    587    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1228677
    588 
    589  * Handle out-of-memory conditions far more gracefully. If the system is
    590    hard against the memory wall, then the kernel will start issuing
    591    SIGBUS even for CPU mmaps. Untrapped these will cause X to die.
    592    https://bugs.freedesktop.org/show_bug.cgi?id=67889
    593 
    594 
    595 Snapshot 2.99.902 (2013-09-07)
    596 ==============================
    597 We do not condone or support Canonical in the course of action they have
    598 chosen, and will not carry XMir patches upstream.
    599 -The Management
    600 
    601 Snapshot 2.99.901 (2013-09-04)
    602 ==============================
    603 What's this? A pre-release snapshot of an upcoming 3.0 major release?
    604 What could be the big new feature about to land? SNA by default!
    605 Not only that, we also have a preview of the XMir integration patches.
    606 
    607 Whilst we consider the SNA acceleration method to be ready to take over
    608 from UXA (the current acceleration method), it still remains possible to
    609 switch over to the old method with the following xorg.conf snippet:
    610   Section "Device"
    611     Identifier "Device0"
    612     Driver "intel"
    613     Option "AccelMethod" "UXA"
    614   EndSection
    615 
    616 The promise of SNA is that it improves the user experience by providing a
    617 faster, more fluid, desktop, that is both more power efficient and less
    618 prone to crashes than UXA. If it still fails to meet your expections,
    619 please file bugs!
    620 
    621 
    622 Release 2.21.15 (2013-08-21)
    623 ============================
    624 Some build fixes for the BSDs and alternate compiler, and conflicting
    625 configure options and a critcial fix for some PRIME setups.
    626 
    627  * Don't fail to configure if DRI1 is not available and the user asks
    628    for both DRI and KMS-only
    629    [Regression from 2.21.14]
    630 
    631  * Lots of miscellaneous fixes for older gcc, other compilers and BSD.
    632 
    633  * Initial framework support for hosted X.
    634 
    635  * Improve transition from fbcon to X with multiple outputs and extended
    636    desktops.
    637 
    638  * Ensure the framebuffer exists before checking it against the CRTC
    639    constraints.
    640    https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/121234
    641    [Regression from 2.21.10]
    642 
    643  * Add RGB overlay support for Ironlake and later.
    644 
    645  * Don't release the overlay buffer too early, i.e. before the client
    646    disables the Xv image.
    647 
    648  * Tweak the ring switching logic to reduce use of semaphores on
    649    Sandybridge and later - a delicate balancing act between trying to
    650    use the faster engine for the task and preventing concurrent use of
    651    multiple rings.
    652 
    653 
    654 Release 2.21.14 (2013-08-04)
    655 ============================
    656 A few updates for the top-end Haswell systems (notably GT3 and GT3e
    657 systems), in particular, setting the appropriate thread counts for the
    658 larger GPU and handling a few scaling issues with the emedded DRAM. More
    659 important than the performance tuning though is a fix for a critical
    660 issue encountered by a few people on gen4/gen5 systems.
    661 
    662  * Initial performance tuning for HSW:GT3e
    663 
    664  * Fix a crash with Planetary Annihilation
    665 
    666  * Disable triple buffering for compositors
    667 
    668  * Reserve space in the exec buffer array for deferred VBOs.
    669    https://bugs.freedesktop.org/show_bug.cgi?id=67504
    670 
    671 
    672 Release 2.21.13 (2013-07-27)
    673 ============================
    674 A minor release to repair the build for non-Linux systems, and to undo a
    675 few more regressions.
    676 
    677  * Avoid potential memory corruption with allocations of very small
    678    depth 1 bitmaps.
    679 
    680  * Fix source clipping whilst computing copy extents and exposures.
    681    [Regression from 2.21.12]
    682    https://bugs.freedesktop.org/show_bug.cgi?id=66970
    683 
    684  * Use /proc/cpuinfo if cpuid4 is not available (old hardware or old
    685    gcc), and repair the build on systems without cpuid.
    686    [Regression from 2.21.12]
    687 
    688  * Fix performance regression on Ironlake from inadvertently flushing
    689    after every operation.
    690    [Regression from 2.21.11]
    691    https://bugs.freedesktop.org/show_bug.cgi?id=67157
    692 
    693  * Fix conflict handling when probing initial KMS configuration for
    694    ZaphodHeads.
    695    [Regression from 2.21.11]
    696    https://bugs.freedesktop.org/show_bug.cgi?id=67176
    697 
    698  * Stop being overly restrictive and rejecting stale DRI2 buffers.
    699    (DRI2 is inherently racy in that the client may have completed and
    700    submitted rendering to buffers that are now invalid on the server.
    701    This race is magnified by bugs within the Xserver where it forgets
    702    to notify the DRI2 clients of certain invalidation events.)
    703    https://bugs.freedesktop.org/show_bug.cgi?id=67210
    704 
    705  * Handle a failure to use a GTT mmap for a pixmap upload and try
    706    an alternative method before giving up.
    707 
    708 
    709 Release 2.21.12 (2013-07-14)
    710 ============================
    711 In this release, we clear up the teething troubles from preserving the KMS
    712 configuration, notably external connections on Haswell and plugging in new
    713 outputs after startup were broken. Besides these regression fixes, there
    714 are a couple of fixes for some long standing issues, such as incorrect
    715 rendering on gen2, an infinite loop with very, very large pixmaps and a
    716 slight improvement to the tempermental gen4.
    717 
    718  * Allow untiled scanouts again (required for large extended desktops on
    719    gen2 and gen3).
    720    [Regression from 2.21.11]
    721 
    722  * Use the correct count of the number of dirty damage boxes for the quick
    723    check on whether the existing damage contains the requested area.
    724    The danger is that we may get a false result and skip migration and so
    725    cause pixmap corruption (in the unlikely event that the application
    726    frequently causes fallbacks).
    727    [Regression from 2.21.11]
    728    https://bugs.freedesktop.org/show_bug.cgi?id=66430
    729 
    730  * Fix initial connection probing for multi-function encoders, such as the
    731    external connections on Haswell.
    732    [Regression from 2.21.11, initial connection probing]
    733    https://bugs.freedesktop.org/show_bug.cgi?id=66488
    734 
    735  * Fix gen2 rendercopy into a8 surfaces, for example, glyph uploads into
    736    the glyph cache.
    737 
    738  * Fix detection of user overrides for initial connection configuration.
    739    The code used the xorg-server-1.15 values, having missed the
    740    introduction of ZoomModes into that release.
    741    [Regression from 2.21.11, initial connection probing]
    742 
    743  * Always initialise the gamma ramp, even on unconnected CRTCs.
    744    https://bugs.freedesktop.org/show_bug.cgi?id=66563
    745    [Regression from 2.21.11, initial connection probing]
    746 
    747  * Some more tuning of the gen4 vertex corruption workaround. The root
    748    cause behind the GPU using incorrect texture coordinates is still
    749    not solved, but by reducing the maximum number or rectangles in
    750    flight through the GPU we reduce the likelihood of corruption.
    751 
    752  * Fix compilation with gcc-4.5
    753    [Regression from 2.21.11]
    754 
    755  * Avoid integer overflow when performing tiled uploads and operations
    756    on very large (>28k pixels wide or tall pixmaps)
    757    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1200766
    758 
    759 
    760 Release 2.21.11 (2013-06-30)
    761 ============================
    762 An eventful week. What started with a regression with some builds of
    763 firefox on some machines lead ultimately to the discovery of an older
    764 kernel bug. Aside from the work to fix the image bug and a few other
    765 older bugs that were reported and resolved this week, there is also a
    766 (hopefully) subtle change to the initial configuration of displays. In
    767 the absence of user overrides in xorg.conf, the DDX will try to preserve
    768 the same display configuration as used by the kernel, which hopefully
    769 will be the same configuration as setup by the BIOS. The result should
    770 be a boot sequence that does not resize at all (aka fastboot) - until
    771 the display manager takes over and loads a completely different
    772 configuration!
    773 
    774  * Add reference counting of drmMaster for ZaphodHeads
    775    https://bugs.freedesktop.org/show_bug.cgi?id=66041
    776 
    777  * Add a GPU flush before changing blend modes on Ironlake
    778    https://bugs.freedesktop.org/show_bug.cgi?id=51422
    779 
    780  * Fix occasional missing images for inplace uploads
    781    [regression from 2.21.10]
    782    https://bugs.freedesktop.org/show_bug.cgi?id=66059
    783 
    784  * Add missing utility files to the tarball and remove a few unused ones
    785 
    786  * Initialise PolyPoint operand state before calling miWideDash
    787    https://bugs.freedesktop.org/show_bug.cgi?id=66104
    788 
    789  * Fix redirection handling for rendering into large surfaces
    790    https://bugs.freedesktop.org/show_bug.cgi?id=66168
    791    https://bugs.freedesktop.org/show_bug.cgi?id=66249
    792 
    793  * Fix compilation of UXA with xorg-xserver < 1.10
    794    [regression from 2.20.0]
    795 
    796  * Fix consideration of gradients for deciding when to migrate render
    797    operations
    798    [performance regression from 2.21.10, the bug itself is older]
    799    https://bugs.freedesktop.org/show_bug.cgi?id=66297
    800 
    801 Also fixed this week was:
    802 
    803 commit 22fd5ca947b58901927d100d2b1aa0f1672b3435
    804 Author: Chris Wilson <chris (a] chris-wilson.co.uk>
    805 Date:   Fri Jun 28 16:54:08 2013 +0100
    806 
    807     drm/i915: Only clear write-domains after a successful wait-seqno
    808 
    809 which affects kernels 3.7 - 3.10, coming to a stable kernel near you soon.
    810 
    811 
    812 Release 2.21.10 (2013-06-22)
    813 ============================
    814 Fixes missing support for Xv (with the textured video adaptor) on
    815 Haswell, and an old bug with wide monitors on various generation. Along
    816 with a few other regression fixes and performance tweaks for various
    817 corner cases.
    818 
    819  * Do not lose track of fast pageflips across mode changes
    820    [regression from 2.20.8]
    821 
    822  * Fix listing of Visuals for Xv
    823    [regression from 2.21.8]
    824    https://bugs.freedesktop.org/show_bug.cgi?id=65479
    825 
    826  * Improve coherency of concurrent CPU accesses to a pixmap
    827    https://bugs.freedesktop.org/show_bug.cgi?id=61628
    828 
    829  * Set sampler swizzling for textured video on Haswell
    830    https://bugs.freedesktop.org/show_bug.cgi?id=65699
    831 
    832  * Apply scanout stride limits
    833    https://bugs.freedesktop.org/show_bug.cgi?id=65099
    834 
    835  * Undo the self-copy for cloned pixmaps for loimpress's animations
    836    [regression from 2.21.7]
    837    https://bugs.freedesktop.org/show_bug.cgi?id=65665
    838 
    839 
    840 Release 2.21.9 (2013-06-06)
    841 ===========================
    842 Consolidating the copy-on-write support, hopefully cleaning up the last of
    843 the regressions.
    844 
    845  * Restore vsync on textured videos.
    846    [regression from 2.21.8]
    847    https://bugs.freedesktop.org/show_bug.cgi?id=65048
    848 
    849  * Fix incorrect ordering of possible_clones with certain outputs, which
    850    can lead to attempting to incorrectly clone 2 outputs and failing to
    851    light them up.
    852    [regression from 2.20.10]
    853 
    854  * Fix performance regression from not promoting large fills to the GPU
    855    [regression from 2.21.7]
    856 
    857  * Undo the pixmap clone before performing a DRI2CopyRegion
    858    [regression from 2.21.7]
    859    https://bugs.freedesktop.org/show_bug.cgi?id=65250
    860 
    861 
    862 Release 2.21.8 (2013-05-27)
    863 ===========================
    864 A quick release to cleanup a few regressions from the introduction of
    865 copy-on-write support, notably hitting wine applications and a memory
    866 leak for firefox.
    867 
    868  * Only mark a PolyFillRect operation as replacing if it is unclipped
    869    https://bugs.freedesktop.org/show_bug.cgi?id=64841
    870 
    871  * Prevent potential NULL dereference of damage when checking COW support
    872 
    873  * Fix invalidation of clone after dirtying the pixmap via the CPU
    874 
    875  * Prevent discarding an operation before requiring it for a fallback
    876 
    877  * Fix memory leak from replacing the clone under certain circumstances
    878    https://bugs.freedesktop.org/show_bug.cgi?id=64978
    879 
    880 
    881 Release 2.21.7 (2013-05-21)
    882 ===========================
    883 A couple of weeks turned into a month and a couple of weeks... Amidst
    884 the usual bug fixes, we have added the complete set of Haswell PCI IDs -
    885 hopefully future proofing ourselves against being surprised by new
    886 products. We can also now use the correct term for the top of the range
    887 Haswell variants, GT3.
    888 
    889  * Fix several assertion failures hit by Jiri Slaby.
    890 
    891  * Allow XvMC to also target overlay/sprite planes.
    892 
    893  * Throw in a paranoid MI_FLUSH between BLT and RENDER operations on
    894    Ironlake.
    895    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1168066
    896 
    897  * Prevent reuse of old framebuffers after a resize.
    898    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1157678
    899 
    900  * Fix compilation with --enable-valgrind and no --enable-debug
    901 
    902  * Improve partial migration of render sources.
    903 
    904  * Fix origin of trapezoids.
    905    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1178020
    906 
    907  * Introduce copy-on-write support for cloning pixmaps. The ultimate
    908    goal here is to efficiently support the TearFree mode of operation,
    909    but this provides immediate benefits with firefox - most importantly
    910    because of the inefficient way it now implements scrolling.
    911 
    912 
    913 Release 2.21.6 (2013-04-06)
    914 ===========================
    915 A surprising highlight of this release is a little refresh to the KMS
    916 support for OpenBSD. OpenBSD now has its own KMS implementation which is
    917 mostly compatible with the interface in Linux, with one or two tweaks
    918 supplied by Mark Kettenis. This release continues to cleanup behaviour
    919 for Haswell.
    920 
    921  * Workaround a failure by the xserver to invalidate DRI buffers
    922    following a pixmap change for XComposite redirection.
    923    https://bugs.freedesktop.org/show_bug.cgi?id=62614
    924 
    925  * Fix computation of clip extents for stippling
    926    https://bugs.freedesktop.org/show_bug.cgi?id=62618
    927 
    928  * Support KMS on OpenBSD, by Mark Kettenis
    929 
    930  * Clean up sockets upon CloseScreen (making ourselves better behaved
    931    for muxed setups).
    932 
    933  * Fix the tests for AVX/AVX2 support in CPUID and remember to check for
    934    OS support as well.
    935 
    936  * Report a monotonic UST value for undisplayed drawables rather than 0
    937    by Daniel Kurtz
    938 
    939  * Fix video playback on gen4 through a complex clip (more gen4 GPU woes)
    940    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1162046
    941 
    942 
    943 Release 2.21.5 (2013-03-21)
    944 ===========================
    945 Haswell reintroduces a command to load the scanline window from the
    946 command stream and so requires its own specialised wait-for-vsync routine
    947 - failure to do so was then causing hangs when trying to do tearfree video
    948 or use a compositor.
    949 
    950  * Prevent buffer leak if a non-fullscreen Window is closed with multiple
    951    pending swap events.
    952 
    953  * Fix offset transformation for fallback gradient paths.
    954    https://bugs.freedesktop.org/show_bug.cgi?id=62198
    955 
    956  * Prevent Glamor from crashing if misconfigured.
    957    Thanks to Michel Dnzer.
    958 
    959  * Prevent UXA from crashing if torn down during PreInit.
    960    Thanks to Aaron Plattner.
    961 
    962  * Prevent miscompilation with different functional units having different
    963    compiler flags. Some functions were expected to be inlined and so
    964    recompiled with the current target. However, some compilers were
    965    choosing to emit subroutine calls instead without noticing that the
    966    ABI was different between the caller and callee - causing corruption.
    967    https://bugs.freedesktop.org/show_bug.cgi?id=62198
    968 
    969  * Fix rendering of CompositeTriFan with recent Xorg.
    970 
    971  * Apply the video src-offset fix highlighted in the last release!
    972    A typo prevented the fix from working for gen4+.
    973    https://bugs.freedesktop.org/show_bug.cgi?id=62343
    974 
    975  * Fix rendering of multiple glyphs to very large destination surfaces
    976    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1156387
    977 
    978  * Fix scanline waits for Haswell
    979    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1156679
    980 
    981 
    982 Release 2.21.4 (2013-03-11)
    983 ===========================
    984 More bugs, more fixes, more releases. A minor new feature being introduced
    985 is the runtime detection of CPU instructions sets along with specialised
    986 paths to take advantage of the available CPU.
    987 
    988  * Honour LinearFramebuffer for clumsy PowerXpress integration
    989 
    990  * Disable read-read optimisations of mappings whilst the root
    991    cause of a corruption issue remains elusive.
    992    https://bugs.freedesktop.org/show_bug.cgi?id=61628
    993 
    994  * Disable 8-bpp framebuffers in UXA as the regressions therein
    995    remain unfixed.
    996 
    997  * Restart vertex checks after lock contention
    998    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1124576
    999 
   1000  * Handle Screen Pixmap recreation whilst exported via PRIME.
   1001 
   1002  * Correct application of scale factors to video source offsets.
   1003    https://bugs.freedesktop.org/show_bug.cgi?id=61610
   1004 
   1005  * Chain up CloseScreen so that resources are actually freed across regen
   1006    https://bugs.freedesktop.org/show_bug.cgi?id=56608
   1007 
   1008  * Fix Haswell CRW PCI-IDs
   1009 
   1010  * Handle batch submission failure during DRI copies
   1011    https://bugs.freedesktop.org/show_bug.cgi?id=61708
   1012 
   1013  * Probe for kernel support of requested Screen depth
   1014    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1135403
   1015 
   1016  * Correct GPU limits for early gen2 and gen3 architectures and prevent
   1017    an infinite recursion for particular image sizes.
   1018 
   1019 
   1020 Release 2.21.3 (2013-02-20)
   1021 ===========================
   1022 A few minor bugfixes, another point release.
   1023 
   1024  * Fix tracking of DRI pixmaps and their backing bo across reparenting. If
   1025    we tried to execute a SwapBuffers after a Window was reparented, but
   1026    before the DRI client has updated its references, then we would end up
   1027    manipulating an exported pixmap without a flush flag set. In the worst
   1028    case, this would culminate in a segfault in the driver.
   1029    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1127497
   1030 
   1031  * Restore the gen4 workarounds for flickering rendering - a few cases still
   1032    remain, as the root cause persists.
   1033    https://bugs.freedesktop.org/show_bug.cgi?id=60402
   1034 
   1035  * Double check that the device has KMS enabled before claiming. This allows
   1036    X to gracefully fallback to VESA/fbdev rather than bailing out.
   1037    https://bugs.freedesktop.org/show_bug.cgi?id=60987
   1038 
   1039  * Fix the UXA render programs for projective transforms on Ivybridge.
   1040 
   1041 
   1042 Release 2.21.2 (2013-02-10)
   1043 ===========================
   1044 Pass the brown paper bags, I need half a dozen or so. That seemingly
   1045 innocuous build fix with xorg-1.13 happened to have the little side-effect
   1046 of breaking glyph rendering with xorg-1.12 and older on 64-bit machines.
   1047 
   1048 
   1049 Release 2.21.1 (2013-02-10)
   1050 ===========================
   1051 A fix for a potential GPU hang on 945gm (GMA950) and earlier chipsets,
   1052 along with backporting SNA to the packages found in stable distributions
   1053 like Debian 6.0 (Squeeze).
   1054 
   1055  * Cleanup compilation warnings from deblint, thanks to Paul Menzel
   1056 
   1057  * Minor build improvements by Damien Lespiau.
   1058 
   1059  * Disable generating span geometry for non-rectilinear spans on gen4
   1060    in order to work around and prevent one class of render corruption.
   1061 
   1062  * Prevent cache thrashing and severe performance degradation on LLC
   1063    machines for streaming texture updates. However, note the effect was
   1064    only observed on just one particular laptop.
   1065 
   1066  * Fix alignment of subsurface proxies for old chipsets.
   1067    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1120108
   1068 
   1069  * Repair build against Xserver-1.6 and contemporary packages.
   1070 
   1071 
   1072 Release 2.21.0 (2013-02-01)
   1073 ===========================
   1074 A few new features:
   1075 
   1076  * Enable render acceleration for Haswell GT1/GT2.
   1077 
   1078  * Enable multi-threaded rasterisation of trapezoids and fallback composition
   1079 
   1080  * Utilise a new kernel interface (v3.9) for processing relocations
   1081 
   1082 along with a few older features from the 2.20.x series:
   1083 
   1084  * PRIME support for hotplug GPUs and hybrid systems
   1085 
   1086  * Support for IvyBridge GT1 machines, aka HD2500 graphics.
   1087 
   1088  * Stable 830gm/845g support, at last!
   1089 
   1090 As usual we have a large number of bug fixes since the last release:
   1091 
   1092  * Prevent a stray relocation being left after a buffer is removed from
   1093    a batch, leading to GPU hangs.
   1094 
   1095  * Make the driver more robust against its own failures to submit batches
   1096    by falling back to software rendering.
   1097 
   1098  * Fix emission of scanline waits for secondary pipes on gen6/7. Otherwise
   1099    you may encounter GPU hangs in MI_WAIT_FOR_EVENT.
   1100 
   1101  * Fix a missing corner pixel when drawing rectangles with PolyLines
   1102    https://bugs.freedesktop.org/show_bug.cgi?id=55484
   1103 
   1104  * Don't try to use Y-tiling colour buffers with mesa/i915c as mesa
   1105    doesn't support them and wil fallback to software rendering
   1106 
   1107  * Ensure that any cached mmaps are invalidated for a SwapBuffers
   1108    https://bugs.freedesktop.org/show_bug.cgi?id=60042
   1109 
   1110  * Correctly handle the composition of rotated displays too large for the
   1111    3D pipeline
   1112    https://bugs.freedesktop.org/show_bug.cgi?id=60124
   1113 
   1114  * Fix the computation of the planar video frame size
   1115    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1104180
   1116 
   1117 
   1118 Release 2.20.19 (2013-01-20)
   1119 ============================
   1120 A quick release as the last broke USB DisplayLink slave outputs badly. The
   1121 performance of those displays was unusable due to an inadvertent change that
   1122 caused us to flush the entire scanout over the USB for every drawing
   1123 operation.
   1124 
   1125  * Implement the GNOME Build API. A couple of minor changes to make
   1126    integrators and distributors lives a little easier, or at least more
   1127    consistent.
   1128 
   1129  * Correctly offset inplace trapezoids for subwindows, such as the GTK+
   1130    close button after it has a background image uploaded.
   1131 
   1132  * Explicitly prevent ring-switching for synchronized rendering to
   1133    scanouts (for vsync).
   1134 
   1135  * Clip dirty region to slave pixmaps (otherwise UDL is nigh unusable)
   1136    https://bugs.freedesktop.org/show_bug.cgi?id=59539
   1137 
   1138 
   1139 Release 2.20.18 (2013-01-16)
   1140 ============================
   1141 A bunch of miscellaneous fixes for assertion failures and various
   1142 performance regressions when mixing new methods for offloads, along with
   1143 a couple of improvements for rendering with gen4.
   1144 
   1145  * Remove use of packed unnormalized texture coordinates on gen4/5 as
   1146    these GPUs do not support unnormalized coordinates in the sampler.
   1147 
   1148  * Remove dependency upon x86 asm for cross-building to unsupported
   1149    architectures.
   1150    https://bugs.gentoo.org/show_bug.cgi?id=448570
   1151 
   1152  * Apply damage around PRIME updates in the correct order.
   1153 
   1154  * Correctly read the initial backlight level for when the user
   1155    overrides UXA's choice of backlight controller.
   1156 
   1157  * Throttle UXA and prevent it queuing work much faster than the GPU can
   1158    complete it. This realised itself in impossible performance figures and
   1159    the entire display freezing for several seconds whlist the GPU caught
   1160    up. One side effect is that it also caused the DDX to consume more
   1161    memory than was required as it could not recycle buffers quick
   1162    enough, and in some cases this produces a marked improvement in
   1163    performance. Also note on gen2/3 this requires a new libdrm [2.4.41]
   1164    in order to prevent a bug causing the DDX to fallback to swrast.
   1165 
   1166 Release 2.20.17 (2012-12-26)
   1167 ============================
   1168 A minor update to prepare for co-operating with the kernel over managing
   1169 stability on 830gm/845g. On this pair of chipsets, the kernel will perform
   1170 an extra copy of the batchbuffer into reserved memory, which prevents them
   1171 from randomly dying. However, that extra copy does have a noticeable
   1172 impact upon throughput, so we also have a mechanism for userspace to
   1173 opt-out of the kernel workaround and take responsibility for ensuring its
   1174 batches are coherent.
   1175 
   1176  * Build fixes against xorg-1.14
   1177    https://bugs.freedesktop.org/show_bug.cgi?id=58552
   1178    https://bugs.freedesktop.org/show_bug.cgi?id=58406
   1179 
   1180  * Fixed the origin of cropped (textured) video windows (Xv and XvMC)
   1181    https://bugs.freedesktop.org/show_bug.cgi?id=23033
   1182 
   1183  * Fix potential corruption when using images larger than ~1GiB
   1184 
   1185 
   1186 Release 2.20.16 (2012-12-15)
   1187 ============================
   1188 Rejoice! We have found a trick to make 830gm/845g stable at long last.
   1189 Ever since the switch to GEM and dynamic video memory, those early
   1190 second generation chipsets have been plagued by instability. The lack of
   1191 flushing cachelines from the CPU to GMCH was eventually solved by using
   1192 an undocmented bit, but 830/845 were still hanging under memory pressure.
   1193 These deaths were all due to garbage finding its way into the command
   1194 streamer, and they go away if we take a leaf out of the original driver
   1195 and never reuse those pages for anything else. So for the first time
   1196 ever, I have been able to complete running the test suite on an 845g,
   1197 even whilst thrashing the page and buffer caches!
   1198 
   1199  * Run the SF stage as single-threaded on gen4 to workaround a few issues
   1200    https://bugs.freedesktop.org/show_bug.cgi?id=57410
   1201 
   1202  * Keep the scanout SURFACE_STATE separate to avoid overriding its
   1203    memory access control on gen6/7 (i.e. writes to the scanout need to
   1204    be kept out of the render cache)
   1205 
   1206  * Tune batch flushing after an operation to an exported surface under a
   1207    compositor.
   1208 
   1209  * Make sure the source is on the CPU for inplace composition of trapezoids
   1210    using the CPU
   1211    https://bugs.freedesktop.org/show_bug.cgi?id=56825
   1212 
   1213  * Immediately flush in the block hander after a split batch to reduce
   1214    latency between the two halves of an operation.
   1215    https://bugs.freedesktop.org/show_bug.cgi?id=51718
   1216 
   1217  * Install a fallback config if we fail to install the desired config
   1218    at VT switch (i.e. booting, after resume with 3 incompatible pipes on
   1219    Ivybridge)
   1220 
   1221  * Pin batches to avoid CS incoherence on 830/845
   1222    https://bugs.freedesktop.org/show_bug.cgi?id=26345
   1223 
   1224 
   1225 Release 2.20.15 (2012-12-03)
   1226 ============================
   1227 And lo, enabling more of the common acceleration paths for gen4 revealed
   1228 another lurking bug - something is wrong with how we prepare Y-tiling
   1229 surfaces for rendering. For the time being, we can surreptitiously disable
   1230 them for gen4 and avoid hitting GPU hangs.
   1231 
   1232  * Avoid clobbering the render state after failing to convert the
   1233    operation to use the blitter.
   1234    https://bugs.freedesktop.org/show_bug.cgi?id=57601
   1235 
   1236  * Disable shadow tracking upon server regeneration, and so fix a crash
   1237    if you restart the server whilst a RandR transform (e.g. rotation) is
   1238    in effect.
   1239    https://bugs.freedesktop.org/show_bug.cgi?id=52255
   1240    https://bugs.freedesktop.org/show_bug.cgi?id=56608
   1241 
   1242 
   1243 Release 2.20.14 (2012-11-26)
   1244 ============================
   1245 The highlight of this release is gen4, from 965g to gm45. Quite an old
   1246 bug surfaced in the shader assembly, sparking a chance to review a few
   1247 design choices within that backend and experiment on fresh ways to
   1248 workaround the remaining issues.
   1249 
   1250  * Avoid using inplace XOR'ed uploads for very large buffers
   1251    https://bugs.freedesktop.org/show_bug.cgi?id=57031
   1252 
   1253  * Fix the gen4/5 opacity shader
   1254    https://bugs.freedesktop.org/show_bug.cgi?id=57054
   1255 
   1256  * Queue a pending vblank request after flip completion
   1257    https://bugs.freedesktop.org/show_bug.cgi?id=56423
   1258 
   1259  * Avoid migrating an uninitialised pixmap for use as a render source
   1260    https://bugs.freedesktop.org/show_bug.cgi?id=47597
   1261 
   1262  * Improve handing of texture fallbacks for 830/845.
   1263    https://bugs.freedesktop.org/show_bug.cgi?id=57392
   1264 
   1265 
   1266 Release 2.20.13 (2012-11-11)
   1267 ============================
   1268 Nothing but bug fixes. Many thanks to everyone who took the time to
   1269 report their issues, and for their help in improving the driver.
   1270 
   1271  * Sanity check the platform probe points to our expected i915 device
   1272    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1069031
   1273 
   1274  * Prevent 16-bit overflow for computing the sample area to upload of
   1275    sources for render operations
   1276    https://bugs.freedesktop.org/show_bug.cgi?id=56324
   1277 
   1278  * Clamp the drawable box for migration to prevent 16-bit overflow
   1279    https://bugs.freedesktop.org/show_bug.cgi?id=56591
   1280 
   1281  * Disable RandR hotplug events if Xinerama is enabled and thereby prevent
   1282    a crash upon hotplug
   1283    https://bugs.freedesktop.org/show_bug.cgi?id=55260
   1284 
   1285  * Call ValidatePicture before attempting to flatten the alphamaps
   1286    https://bugs.freedesktop.org/show_bug.cgi?id=56367
   1287 
   1288  * Clip the trapezoid correctly if it ends on the boundary pixel
   1289    https://bugs.freedesktop.org/show_bug.cgi?id=56395
   1290 
   1291  * Make sure the pipeline choice is propagated to the scanline wait
   1292    across a batch flush
   1293    https://bugs.freedesktop.org/show_bug.cgi?id=47597
   1294 
   1295  * Set the valid drawable box when choosing placement of BLT composite ops
   1296    https://bugs.freedesktop.org/show_bug.cgi?id=47597
   1297 
   1298  * Prevent use-after-free when promoting a partial-GPU bo to a full-GPU bo
   1299    https://bugs.freedesktop.org/show_bug.cgi?id=56591
   1300 
   1301  * gen4 opacity spans require the per-rectangle workaround
   1302    https://bugs.freedesktop.org/show_bug.cgi?id=55500
   1303 
   1304  * Prevent use of invalid damage pointers when redirecting rendering
   1305    https://bugs.freedesktop.org/show_bug.cgi?id=56785
   1306 
   1307 
   1308 Release 2.20.12 (2012-10-20)
   1309 ============================
   1310 More bug reports, more bug fixes! Perhaps the headline feature is
   1311 that with a secure batches, coming to a 3.8 kernel near you, we may
   1312 finally have the ability to perform updates to the scanout synchronized
   1313 to the refresh rate on later SandyBridge and IvyBridge chipsets. It comes
   1314 at quite a power cost as we need to keep the GPU out of its power saving
   1315 modes, but it should allow legacy vsync to function at last. But this
   1316 should allow us to address a longstanding issue with tearing on
   1317 SandyBridge+.
   1318 
   1319  * Fix component-alpha rendering on IvyBridge, for example subpixel
   1320    antialiased glyphs.
   1321    https://bugs.freedesktop.org/show_bug.cgi?id=56037
   1322 
   1323  * Flush before some "pipelined" state changes on gen4. The evidence is
   1324    that the same flushes as required on gen5+ are also required for gen4.
   1325    https://bugs.freedesktop.org/show_bug.cgi?id=55627
   1326 
   1327  * Prevent a potential crash when forcing a stall on a busy CPU bo
   1328    https://bugs.freedesktop.org/show_bug.cgi?id=56180
   1329 
   1330 [Release 2.20.11 contained a typo causing UXA to fail immediately.]
   1331 
   1332 Release 2.20.10 (2012-10-14)
   1333 ============================
   1334 The last couple of weeks have been fairly retrospective, a dive into
   1335 prehistory tidying up the earlier generations which lay languishing as
   1336 the core progressed and lead to a number of annoying core bugs being
   1337 fixed.
   1338 
   1339  * Release DRM master earlier during shutdown so switching between
   1340    multiple X servers works automatically.
   1341    https://bugs.freedesktop.org/show_bug.cgi?id=55446
   1342 
   1343  * Suppress error propagation from DRI2GetMSC and behave as if the pipe
   1344    was simply off to avoid unexpected errors in the clients
   1345    https://bugs.freedesktop.org/show_bug.cgi?id=55395
   1346 
   1347  * A few fixes to i8xx batch emission, ensuring that the GPU is always
   1348    in a valid state.
   1349    https://bugs.freedesktop.org/show_bug.cgi?id=55455
   1350 
   1351  * Prevent a use-after-free during UXA shutdown due to inspecting
   1352    the glamor flags after the glamor interface had been freed.
   1353 
   1354  * Prevent a crash combining TearFree and rotations.
   1355    https://bugs.freedesktop.org/show_bug.cgi?id=55527
   1356 
   1357  * Correct a missing damage upload along PutImage after using the CPU bo
   1358    as a source for the GPU.
   1359    https://bugs.freedesktop.org/show_bug.cgi?id=55508
   1360 
   1361  * Fix compilation for older glibc without O_CLOEXEC
   1362    https://bugs.freedesktop.org/show_bug.cgi?id=55577
   1363 
   1364  * Fix out-of-tree builds failing to recompile the gen4 assemblies
   1365    https://bugs.freedesktop.org/show_bug.cgi?id=55645
   1366 
   1367  * Fix non-standard build host configuration handling for intel-gen4asm
   1368    https://bugs.freedesktop.org/show_bug.cgi?id=55646
   1369 
   1370  * Fix a potential batch buffer overflow when replacing the last BLT fill
   1371    operation with a copy
   1372    https://bugs.freedesktop.org/show_bug.cgi?id=55700
   1373 
   1374  * Flush the render pipeline more frequently on Ironlake as not all
   1375    pipelined state changes are.
   1376    https://bugs.freedesktop.org/show_bug.cgi?id=51422
   1377 
   1378  * Detect when we need to read the destination for the background raster
   1379    op during fallbacks.
   1380    https://bugs.freedesktop.org/show_bug.cgi?id=55810
   1381 
   1382  * Avoid a potential deference of an invalid CPU mmap after doing an
   1383    inplace tiled upload.
   1384    https://bugs.freedesktop.org/show_bug.cgi?id=55812
   1385 
   1386  * Prevent sign extension when packing the upload data for CopyPlane
   1387    https://bugs.freedesktop.org/show_bug.cgi?id=55823
   1388 
   1389  * Fix some render corruption with a UDL slave output and pageflipping
   1390 
   1391 
   1392 Release 2.20.9 (2012-09-29)
   1393 ===========================
   1394 And so it came to pass that a critical bug was uncovered in UXA. The
   1395 kernel does not like to pageflip when the pipe is off, yet due to the
   1396 delayed nature of a pageflip and the relaxed checking performed by UXA,
   1397 we could request a pageflip after turning off the display (DPMS). The
   1398 kernel rejected that pageflip and the error handling path failed to
   1399 restore sanity, and when the screen came back it was stuck on the image
   1400 seen before it went to sleep. (Note that there are also some related
   1401 kernel bugs, but this update should prevent the most conspicious of the
   1402 freezes.) Many thanks to Timo Aaltonen for his efforts in tracking down
   1403 the issue.
   1404 
   1405 In other news:
   1406 
   1407   * Prepare for xorg-1.14, the api is being tweaked again.
   1408 
   1409   * Handle early FreeScreen in UXA.
   1410     https://bugs.freedesktop.org/show_bug.cgi?id=55346
   1411 
   1412   * Reenable XvMC support
   1413 
   1414   * Do not replace the GPU bo when uploading into the shadow/CPU copy
   1415     https://bugs.freedesktop.org/show_bug.cgi?id=54978
   1416 
   1417   * Fix use of an uninitialised GC when drawing glyphs to a depth=1 pixmap
   1418 
   1419 
   1420 Release 2.20.8 (2012-09-16)
   1421 ===========================
   1422 Another new small feature, another new release. And a few more bugs
   1423 fixed as well! But what is this new feature, do I hear you ask? Why, it
   1424 is nothing less than enabling the ValleyView SDV! The lucky person to
   1425 have their hands on one will now be able to enjoy X in full TechniColor.
   1426 
   1427 For the rest of us, a few more bugs were fixed with interesting
   1428 combinations of software and rendering patterns.
   1429 
   1430  * Add an extra layer of defence against trying to use a non-GEM device
   1431    with UXA. This should already be taken care of with the new probe,
   1432    but the extra sanity check already existed in the code but was doing
   1433    nothing.
   1434    https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/962892
   1435 
   1436  * Fix computation of valid CRTCs bitmask for ZaphodHead
   1437    Some systems can only handle certain outputs on certain pipes
   1438    (Screens), and this information was not being propagated through to X
   1439    and randr correctly, breaking valid configurations and not detecting
   1440    invalid configurations correctly.
   1441 
   1442  * Disable global glyph caching with ZaphodHeads.
   1443    The glyph privates need to be Screen private, but at the moment are
   1444    global leading to conflicts and invalid rendering with multiple heads.
   1445    https://bugs.freedesktop.org/show_bug.cgi?id=54707
   1446 
   1447  * Prevent direct read back of unmappable buffers
   1448    https://bugs.freedesktop.org/show_bug.cgi?id=54808
   1449 
   1450  * Tile large uploads whilst replacing the alpha channel
   1451    https://bugs.freedesktop.org/show_bug.cgi?id=54808
   1452 
   1453  * Correct the source offset when converting a RENDER composite
   1454    operation into a BLT composite operation.
   1455    https://bugs.freedesktop.org/show_bug.cgi?id=54868
   1456 
   1457  * Correct a minor typo in flattening alphamaps which caused the
   1458    replacement pixmap to often end up with a height of zero.
   1459    https://bugs.gentoo.org/show_bug.cgi?id=434860
   1460 
   1461  * Don't discard the CPU damage if only part of is being replaced.
   1462    This is most evident when combining software renders like Opera with
   1463    accelerated rendering.
   1464    https://bugs.freedesktop.org/show_bug.cgi?id=54937
   1465 
   1466 Release 2.20.7 (2012-09-08)
   1467 ===========================
   1468 Continuing the flurry of releases, this week saw the release of
   1469 xorg-1.13 bringing with it the first steps towards hotpluggable gpu
   1470 support and the ability to offload DRI rendering onto other GPUs. In
   1471 light of that advance, this release includes the support code by Dave
   1472 Airlie to integrate PRIME into xf86-video-intel and make those new
   1473 features available.
   1474 
   1475 Aside from landing PRIME, a few other bugs were fixed since 2.20.6:
   1476 
   1477  * Fix framebuffer leak on server regeneration
   1478 
   1479  * Fix texture cache flushing on IvyBridge and Kwin with plastique
   1480    https://bugs.freedesktop.org/show_bug.cgi?id=54488
   1481 
   1482  * Redirect large solid fills on SandyBridge+. By large I mean greater
   1483    than 8192 or 16384 pixels on SandyBridge and IvyBridge respectively.
   1484    https://bugs.freedesktop.org/show_bug.cgi?id=54134
   1485 
   1486  * Fix up backlight option handling in the manpage and uxa.
   1487    https://bugs.freedesktop.org/show_bug.cgi?id=54397
   1488 
   1489  * Unbreak ZaphodHeads.
   1490    https://bugs.freedesktop.org/show_bug.cgi?id=52438
   1491 
   1492 Release 2.20.6 (2012-09-02)
   1493 ===========================
   1494 A serious bug that caused a crash on SandyBridge and IvyBridge when
   1495 mixing CPU and GPU operations on the same buffer, and an annoyance from
   1496 bad scheduling of windowed swapbuffer updates causing low framerates and
   1497 jitter. Plus the usual smattering of assertion fixes and a long standing
   1498 issue with incoherent page access to a streaming buffer.
   1499 
   1500  * Low frame rates in Blobby Valley when "fullscreen"
   1501    https://bugs.freedesktop.org/show_bug.cgi?id=54274
   1502 
   1503  * Incoherent concurrent access with the CPU and GPU
   1504    https://bugs.freedesktop.org/show_bug.cgi?id=51422
   1505    https://bugs.freedesktop.org/show_bug.cgi?id=52299
   1506 
   1507  * Add Option "Backlight" to override automatic selection of the
   1508    backlight interface.
   1509 
   1510  * Avoid overwriting the composite operation info when testing if we
   1511    can transfer the operation to the BLT.
   1512 
   1513 Release 2.20.5 (2012-08-26)
   1514 ===========================
   1515 Another silly bug found, another small bugfix release. The goal was for
   1516 the driver to bind to all Intel devices supported by the kernel.
   1517 Unfortunately we were too successful and started claiming Pouslbo,
   1518 Medfield and Cedarview devices which are still encumbered by proprietary
   1519 IP and not supported by this driver.
   1520 
   1521 Bugs fixed since 2.20.4:
   1522 
   1523  * Only bind to Intel devices using the i915 kernel module
   1524 
   1525  * Regression in the bitmap-to-region code, e.g. icewm window buttons
   1526    https://bugs.freedesktop.org/show_bug.cgi?id=53699
   1527 
   1528 Release 2.20.4 (2012-08-18)
   1529 ===========================
   1530 Continuing the small bugfix releases, the only real feature is initial
   1531 enabling for Haswell for the purpose of rendering verification and
   1532 validation - by no means is it complete!
   1533 
   1534 Bugs fixed since 2.20.3:
   1535 
   1536   * Some potential errors along failure paths found by a static analyser
   1537   with the help of Zdenek Kablac.
   1538 
   1539   * Eliminate zero-sized rectangles from PolyFillRectangles as the code
   1540   assumes that they did not exist and so caused corruption.
   1541 
   1542   * Remove the UXA warning for failing to tile the front buffer if it is
   1543   disallowed by hardware, and so expected.
   1544 
   1545   * Fix the validation of the XV pipe parameter.
   1546 
   1547   * Fix 8x8 tiled pattern fills
   1548   https://bugs.freedesktop.org/show_bug.cgi?id=53353
   1549 
   1550   * Fix compile failure when using --with-builderstring
   1551 
   1552   * Restore w/a flush for gen4 fill/copy/video, fortunately rare
   1553   operations as at least for fill/copy we prefer to use the BLT.
   1554   https://bugs.freedesktop.org/show_bug.cgi?id=53119
   1555 
   1556   * Restore preferred use of the RENDER ring for SNB+ DRI copies.
   1557 
   1558 Release 2.20.3 (2012-08-04)
   1559 ===========================
   1560 Just a minor bugfix for gen4 chipsets (965gm, gm45 and friends) that
   1561 crept into 2.20.2. As an added bonus, the pessimistic workaround for a
   1562 GPU hang on gen4 has been relaxed and the shaders have been overhauled
   1563 which should pave the way to eliminating the last of the uncommon CPU
   1564 operations, along with immediately realising a small perforamnce
   1565 improvement.
   1566 
   1567 Bugs fixed since 2.20.2:
   1568 
   1569  * Update DPMS bookkeeping after modeset
   1570    https://bugs.freedesktop.org/show_bug.cgi?id=52142
   1571 
   1572  * Avoid overlapping gpu/cpu damage after ignoring cpu damage in the
   1573    consideration of placement for the operation.
   1574 
   1575  * Enable acceleration by default on 830gm/845g. The GMCH on this pair
   1576    of chipsets is notoriously incoherent, so the GPU is almost certainly
   1577    going to hang at some point, though unlikely to hang the system and
   1578    should automatically disable acceleration (and thence behave
   1579    identically as if the acceleration was disabled from the start).
   1580    Option "NoAccel" can be used to disable all 2D acceleration and
   1581    Option "DRI" can be used to disable all 3D acceleration.
   1582    https://bugs.freedesktop.org/show_bug.cgi?id=52624
   1583 
   1584  * Fix vertex bookkeeping for gen4 that was causing corruption in the
   1585    command stream.
   1586 
   1587 Release 2.20.2 (2012-07-27)
   1588 ===========================
   1589 For the last 9 months, since 2.16.901, we have been shipping a driver that
   1590 does not work on IvyBridge GT1 systems (HD2500 graphics); we were telling
   1591 the GPU to use an invalid number of threads for the pixel shader and this
   1592 in turned caused the GPU to hang.
   1593 
   1594 Also fixed since the last release just a few days ago:
   1595 
   1596 * Support for the gmux backlight controller on Apple laptops
   1597   https://bugs.freedesktop.org/show_bug.cgi?id=52423
   1598 
   1599 * Fix X -configure not to list this driver as matching any Intel device,
   1600   just the VGA class devices will do!
   1601 
   1602 * A crash in SNA when repeatedly switching xrandr rotations
   1603 
   1604 * Corruption in SNA observed in kwin on IvyBridge
   1605   https://bugs.freedesktop.org/show_bug.cgi?id=52473
   1606 
   1607 Release 2.20.1 (2012-07-22)
   1608 ===========================
   1609 A week in, grab the brown paper bags, for it is time to reveal a couple
   1610 of critical bugs that spoilt the 2.20.0 release.
   1611 
   1612 Firstly we have the restoration of DRI for i810. I am sure that the
   1613 solitary user will be overjoyed in a couple of years when a new xserver
   1614 is forced upon him. That enjoyment will be short-lived when as no actual
   1615 acceleration remains, not even shadow, for the chipset.
   1616 
   1617 Perhaps a little more wildly felt, I hope!, will be that the SNA
   1618 fallbacks were broken on 64-bit machines if they required clipping. One
   1619 little misplaced cast of a pointer, and the screen is filled with
   1620 corruption.
   1621 
   1622 Among the other tweaks this week:
   1623 
   1624 * A bug affecting gen4 handling of trapezoids was fixed, and CPU
   1625   overhead reduced.
   1626   https://bugs.freedesktop.org/show_bug.cgi?id=52158
   1627 
   1628 * A fix for a bug causing corruption of a DRI2 unredirected client
   1629   window that was resized whilst under a compositor.
   1630 
   1631 * Support for snoopable buffers on non-LLC architectures, coming to
   1632   a future kernel. The aim to accelerate transfers between the CPU
   1633   and the GPU, in particular to dramatically improve readback
   1634   performance, and to further minimise clflushes.
   1635 
   1636 * Improvement to the composite performance on GT2 SandyBridge and
   1637   IvyBridge devices, in particular the render copy is significantly
   1638   improved.
   1639 
   1640 * Improved handling for when acceleration is disabled, including
   1641   permitting DRI2 to remain supported even if the X server believes
   1642   the GPU wedged.
   1643 
   1644 * Shadow support was dropped from UXA as it was neither complete nor
   1645   correct, use SNA instead.
   1646 
   1647 Release 2.20.0 (2012-07-15)
   1648 ===========================
   1649 First the big news, a new acceleration method that aims to be faster and
   1650 consume far less CPU than UXA is now available for selection at runtime.
   1651 This snazzy new architecture can be selected through use of
   1652   Option "AccelMethod" "sna"
   1653 in your xorg.conf. Whilst it has been under development for some time, it
   1654 has not yet had the same degree of widespread testing of UXA, so tread
   1655 lightly. Try it and if you spot anything that can be improved, please do
   1656 report a bug.
   1657 
   1658 Otherwise we have the usual smattering of bug fixes for UXA:
   1659 
   1660  * Use a white source whilst adding glyphs to the glyph mask
   1661    (This fixes blank glyphs if using a font that mixes ARGB and A glyphs.)
   1662 
   1663  * Avoid fallbacks for glyph-to-dst in e.g. gnome-terminal
   1664    https://bugs.freedesktop.org/show_bug.cgi?id=50508
   1665 
   1666  * Force unused outputs off when VT switching
   1667    https://bugs.freedesktop.org/show_bug.cgi?id=50772
   1668 
   1669  * Copy the fbcon across to the Screen pixmap at startup.
   1670    (This patch has been kicking around in the distributions for years.)
   1671 
   1672  * Many missed malloc failures checks and forgotten frees found by a static
   1673    analyzer. Thanks Zdenek Kabelac!
   1674 
   1675  * Leak of the back buffer when terminating an application after pageflipping
   1676    https://bugs.freedesktop.org/show_bug.cgi?id=50670
   1677 
   1678  * Double check that the pipe is on before emitting a WAIT_ON_EVENT.
   1679    In conjunction with an uptodate kernel, this should eliminate any
   1680    hangs when changing resolutions or adding/removing displays.
   1681    https://bugs.freedesktop.org/show_bug.cgi?id=50668
   1682 
   1683  * Update to new Xorg APIs. Future proofing for the next generation of
   1684    hotplug Xorg display servers.
   1685 
   1686 Many thanks to everyone who has reported a bug and otherwise helped to
   1687 improve the driver.
   1688 
   1689 Release 2.19.0 (2012-04-29)
   1690 ===========================
   1691 More stability fixes for UXA and support for another variant of IvyBridge.
   1692 Given the severity of the stability fixes, I strongly recommend everybody
   1693 to upgrade to 2.19.0.
   1694 
   1695 * Prevent waiting on scanlines whilst not in control of the VT and therefore
   1696   whilst referencing foreign CRTC configurations.
   1697 
   1698 * Pixmap (and bo leak) during fallback glyph composition
   1699 
   1700 * Remove broken acceleration for rendering glyphs directly upon the
   1701   destination pixmap, exposed by cairo-1.12.0 (and coincidentally fix
   1702   another Pixmap leak upon fallback handling).
   1703 
   1704 * Add support for Ivy Bridge GT2 Server chipset [PCI id 0x016a]
   1705 
   1706 * Remove broken damage flushing with CompositeRectangles
   1707   https://bugs.freedesktop.org/show_bug.cgi?id=32547
   1708 
   1709 * Fix crash upon server start with multiple monitors
   1710   https://bugs.freedesktop.org/show_bug.cgi?id=47395
   1711 
   1712 * Fix composition issues resulting from overly aggressive Pixmap reuse
   1713   https://bugs.freedesktop.org/show_bug.cgi?id=47345
   1714 
   1715 Release 2.18.0 (2012-02-24)
   1716 ===========================
   1717 Time passes, a few more bugs have crept out of the woodwork that are a
   1718 compelling reason to update.
   1719 
   1720 Bugs fixed in this release (compared to 2.17.0)
   1721 -----------------------------------------------
   1722 
   1723 * Limit maximum object size so that all of the source, mask and
   1724   destination can be mapped into the aperture simultaneously by basing the
   1725   limit on the mappable aperture size rather than the size of the total
   1726   GATT.
   1727 
   1728 * Incorrect clipping of polygons
   1729   https://bugs.freedesktop.org/show_bug.cgi?id=43649
   1730   Regression from 2.15.901
   1731 
   1732 * Limit number of VMA cached to avoid hitting the per-process VMA limit
   1733   There still is a residual bug in that we seem to have so many objects
   1734   floating around in the first place and that still leads to exhaustion
   1735   of system limits.
   1736   https://bugs.freedesktop.org/show_bug.cgi?id=43075
   1737   https://bugs.freedesktop.org/show_bug.cgi?id=40066
   1738 
   1739 * Latency in processing user-input during continuous rendering
   1740 
   1741 Release 2.17.0 (2011-11-16)
   1742 ==============================
   1743 A few months have passed, and we have accumulated a surprising number of
   1744 bug fixes. Oops! We would strongly encourage everyone to upgrade.
   1745 
   1746 Bugs fixed in this snapshot (compared to 2.16.902)
   1747 --------------------------------------------------
   1748 
   1749 * Video clobbering composite batch state
   1750   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=635953
   1751 
   1752 Snapshot 2.16.902 (2011-11-13)
   1753 ==============================
   1754 This is the second release candidate in preparation for the upcoming
   1755 2.17.0 release. We will appreciate any feedback we can get from
   1756 testing of this snapshot, and thanks to everyone who tested and reported
   1757 upon issues in the last snapshot.
   1758 
   1759 A very old bug demonstrating that nobody has ever used alpha maps, and a
   1760 couple of more recent mistakes were found.
   1761 
   1762 Bugs fixed in this snapshot (compared to 2.16.901)
   1763 --------------------------------------------------
   1764 
   1765  * Incorrect reuse of surface bindings within a batch for multiple formats
   1766    https://bugs.freedesktop.org/show_bug.cgi?id=40926
   1767 
   1768  * Nothing was rendered for text with procedural sources
   1769    https://bugs.freedesktop.org/show_bug.cgi?id=31819
   1770 
   1771  * Handle fallbacks involving alpha maps
   1772 
   1773 Snapshot 2.16.901 (2011-10-30)
   1774 ==============================
   1775 This is the first release candidate in preparation for the upcoming
   1776 2.17.0 release. We will appreciate any feedback we can get from
   1777 testing of this snapshot.
   1778 
   1779 The basis of this release are to push out a couple of critical stability
   1780 fixes for SandyBridge and IvyBridge. There is very little else to see
   1781 here. Those 200+ other commits do not exist...
   1782 
   1783 Bugs fixed in this snapshot (compared to 2.16.0)
   1784 --------------------------------------------------
   1785 
   1786  * Workaround blitter hang on SandyBridge and IvyBridge
   1787    https://bugzilla.kernel.org/show_bug.cgi?id=27892
   1788    https://bugs.freedesktop.org/show_bug.cgi
   1789 
   1790  * Workaround pipe control issues on SandyBridge
   1791 
   1792  * Use correct maximum PS thread count on IvyBridge
   1793 
   1794  * Protect against failed pixmap allocation for XV
   1795    https://bugs.freedesktop.org/show_bug.cgi?id=40439
   1796 
   1797 Release 2.16.0 (2011-08-09)
   1798 ==============================
   1799 A new quarter, a new release! The key feature of this release, looking past
   1800 the bug fixes, is the enabling of IvyBridge acceleration. We have also fixed
   1801 many bugs and graphical glitches and would encourage everyone to upgrade.
   1802 
   1803 Bugs fixed in this snapshot (compared to 2.15.901)
   1804 --------------------------------------------------
   1805 
   1806 * Build fix for xserver-1.7.7
   1807 
   1808 Snapshot 2.15.901 (2011-07-30)
   1809 ==============================
   1810 This is the first release candidate in preparation for the upcoming
   1811 2.16.0 release. We will appreciate any feedback we can get from
   1812 testing of this snapshot.
   1813 
   1814 The highlight of this snapshot is the full enabling of IvyBridge with
   1815 acceleration for Render and Xv, along with handling of the shared render
   1816 buffer allocations required for Mesa. Also of note is that deep-color
   1817 support is enabled (for all chipsets), which allows you to drive your
   1818 30-bit monitor at its native colour depth.
   1819 
   1820 Bugs fixed in this snapshot (compared to 2.15.0)
   1821 --------------------------------------------------
   1822 
   1823 * Misuse of the Resource database causing crashes after DRI clients close
   1824   https://bugs.freedesktop.org/show_bug.cgi?id=37700
   1825 
   1826 * Crash on large strings
   1827   https://bugs.freedesktop.org/show_bug.cgi?id=36860
   1828 
   1829 * Incorrect rendering for some core drawing operations
   1830   http://bugs.freedesktop.org/show_bug.cgi?id=28768
   1831   http://bugs.freedesktop.org/show_bug.cgi?id=28798
   1832   http://bugs.freedesktop.org/show_bug.cgi?id=28908
   1833   http://bugs.freedesktop.org/show_bug.cgi?id=29401
   1834 
   1835 * Crash in Xv due to insufficient checks on batch space
   1836   https://bugs.freedesktop.org/show_bug.cgi?id=36319
   1837 
   1838 Release 2.15.0 (2011-04-14)
   1839 ==============================
   1840 We are pleased to announce this major release of the xf86-video-intel
   1841 driver, roughly on schedule at 3 months since 2.14.0. With the many bug
   1842 fixes in this release, we encourage everyone to upgrade to 2.15.
   1843 
   1844 The priority for this quarter has been simply to be unexciting and stabilise
   1845 the driver further, seeking to capitalise upon the improvements elsewhere
   1846 in the stack.
   1847 
   1848 Bugs fixed in this snapshot (compared to 2.14.903)
   1849 --------------------------------------------------
   1850 
   1851 * Turn off relaxed fencing by default for older chipsets
   1852   This was continuing to destabilize those system, so for the release
   1853   we disabled the feature. If you wish to help us debug this, you can
   1854   re-enable the optimisation with Option "RelaxedFencing" "True".
   1855   Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=36147
   1856 
   1857 * Build fix for xserver-1.7.7
   1858 
   1859 * KDE glitches on SNB
   1860   [Technically fixed in the previous snapshot, but I'm really pleased
   1861    that this got fixed in time for the release!]
   1862   https://bugs.freedesktop.org/show_bug.cgi?id=35808
   1863 
   1864 
   1865 Snapshot 2.14.903 (2011-04-11)
   1866 ==============================
   1867 This is the third release candidate in preparation for the upcoming
   1868 2.15.0 release. We will appreciate any feedback we can get from
   1869 testing of this snapshot.
   1870 
   1871 There was a bit of churn since 2.14.902 as a potential fix for a
   1872 performance regression was tried but had to reverted when it was found to
   1873 cause glitches running Compiz on SandyBridge. Otherwise, there were just a
   1874 couple of fixes for building against old xservers and running on an
   1875 obscure chipset.
   1876 
   1877 Bugs fixed in this snapshot (compared to 2.14.902)
   1878 --------------------------------------------------
   1879 
   1880 * Prevent issuing an invalid scanline wait command
   1881   https://bugs.freedesktop.org/show_bug.cgi?id=35576
   1882 
   1883 * The 946GZ in not a 945, but a 965.
   1884   https://bugs.freedesktop.org/show_bug.cgi?id=35854
   1885 
   1886 * Fix tile sizes for gen2 (finally).
   1887 
   1888 * Allow building of recent dri2 changes against old xservers.
   1889 
   1890 
   1891 Snapshot 2.14.902 (2011-03-29)
   1892 ==============================
   1893 This is the second release candidate in preparation for the upcoming
   1894 2.15.0 release. We will appreciate any feedback we can get from
   1895 testing of this snapshot.
   1896 
   1897 As befits testing of release candidates, no major regression was found and
   1898 a couple more bugs have been fixed.
   1899 
   1900 Bugs fixed in this snapshot (compared to 2.14.901)
   1901 --------------------------------------------------
   1902 
   1903 * Clients disappearing with pending swaps
   1904 
   1905 * Incorrect clipping of Xv output on i915 across extended desktops
   1906   https://bugs.freedesktop.org/show_bug.cgi?id=35346
   1907 
   1908 * Introduction of a LinearFramebuffer option. (Defaults to tiled for
   1909   performance and power saving.)
   1910 
   1911 
   1912 Snapshot 2.14.901 (2011-03-02)
   1913 ==============================
   1914 This is the first release candidate in preparation for the upcoming
   1915 2.15.0 release. We will appreciate any feedback we can get from
   1916 testing of this snapshot.
   1917 
   1918 Still no further along my grandiose plans to improve Render performance,
   1919 aside from the performance tuning lower in the stack, instead we have had
   1920 a steady stream of bug fixes.
   1921 
   1922 Bugs fixed in this snapshot (compared to 2.14.0)
   1923 ------------------------------------------------
   1924 
   1925 * Green pixels within partially off-screen video playback
   1926   https://bugs.freedesktop.org/show_bug.cgi?id=24767
   1927 
   1928 * Defer creation of the glyph cache to generation startup
   1929   https://bugs.freedesktop.org/show_bug.cgi?id=33412
   1930 
   1931 * Incorrect maximum addresses for video decoder state
   1932   https://bugs.freedesktop.org/show_bug.cgi?id=34017
   1933 
   1934 * Failure to handle oversized temporary surfaces
   1935   https://bugs.freedesktop.org/show_bug.cgi?id=34399
   1936 
   1937 * Relaxed tiling corruption on gen2
   1938 
   1939 * Crash when destroying a foreign DRI drawable
   1940   https://bugs.freedesktop.org/show_bug.cgi?id=34787
   1941 
   1942 
   1943 Release 2.14.0 (2011-01-07)
   1944 ===========================
   1945 We are pleased to announce this major release of the xf86-video-intel
   1946 driver, on schedule at 3 months since 2.13.0. With the many bug fixes
   1947 in this release, we encourage everyone to upgrade to 2.14.
   1948 
   1949 The most notable feature of this release is the inclusion of acceleration
   1950 support, both RENDER and XVIDEO, for Sandy Bridge; note that this requires
   1951 a 2.6.37 kernel. In improving the acceleration code paths to support Sandy
   1952 Bridge, we were also able to improve the performance of the general i965+
   1953 RENDER acceleration. For example on i3, glyph (aa10 and rgb10) performance
   1954 is about 3x faster, as is performing small copies between windows, with the
   1955 improvement becoming negligible once you hit around 100 pixels square.
   1956 
   1957 
   1958 Snapshot 2.13.903 (2010-01-04)
   1959 ==============================
   1960 This is the second release candidate in preparation for the upcoming
   1961 2.14.0 release, and if no showstoppers turn up in wider testing will
   1962 become the next release. Besides the usual bug fixes, we've included
   1963 patches by Mario Kleiner to improve vblank handing which both improve the
   1964 timing accuracy and remove a few potential races -- provided you also
   1965 have the corresponding fixes in the kernel.
   1966 
   1967 Bug fixes
   1968 ---------
   1969 
   1970  * Crash on hot-unpluging with an active fullscreen GL application, e.g. a
   1971    compositing WM or video player
   1972    https://bugs.freedesktop.org/show_bug.cgi?id=32770
   1973 
   1974  * Freeze upon maximising client-side software renderers, e.g. flash.
   1975    https://bugs.freedesktop.org/show_bug.cgi?id=31367
   1976 
   1977  * Fix confusion over G35 generation
   1978    https://bugs.freedesktop.org/show_bug.cgi?id=32478
   1979 
   1980 
   1981 Snapshot 2.13.902 (2010-12-10)
   1982 ==============================
   1983 This is the first release candidate in preparation for the upcoming
   1984 2.14.0 release. Sandybridge support should be now be ready for use,
   1985 and we will appreciate any feedback we can get from this snapshot.
   1986 Improving the code base for Sandybridge should also have had knock
   1987 on effects for earlier chips as well, in particular Ironlake and to
   1988 a lesser extent i965.
   1989 
   1990 New requirements compared to 2.13
   1991 ---------------------------------
   1992  * Librdrm >= 2.4.23
   1993 
   1994 Bug fixes
   1995 ---------
   1996 
   1997  * Crash after failing to allocate memory
   1998    https://bugs.freedesktop.org/show_bug.cgi?id=31487
   1999 
   2000  * EFAULT during pwrite
   2001    https://bugs.freedesktop.org/show_bug.cgi?id=29752
   2002 
   2003  * Mark outputs as on and restore backlight after mode-set
   2004 
   2005  * A hang with i965+ with newer kernels.
   2006 
   2007 
   2008 Snapshot 2.13.901 (2010-11-05)
   2009 ==============================
   2010 This is an intermediate snapshot of ongoing driver development. The
   2011 primary purpose of this snapshot is to capture some recent
   2012 improvements, (particularly in Sandybridge support), for further
   2013 testing.
   2014 
   2015 Release 2.13.0 (2010-09-30)
   2016 ===========================
   2017 We are pleased to announce this major release of the xf86-video-intel
   2018 driver, on schedule at 3 months since 2.12.0. With the many bug fixes
   2019 in this release, we encourage everyone using 2.12 to upgrade to 2.13.
   2020 
   2021 [This release is functionally identical to the earlier 2.12.902
   2022 release candidate.]
   2023 
   2024 New requirements compared to 2.12
   2025 ---------------------------------
   2026  * Librdrm >= 2.4.22
   2027 
   2028 Bug fixes
   2029 ---------
   2030  * Attempt to fix infinite MI_WAIT_FOR_EVENT while watching video
   2031    https://bugs.freedesktop.org/show_bug.cgi?id=28964
   2032 
   2033    [Various new checks have been added to the video code here, but the
   2034    bug fix hasn't yet been verified by the original reporter.]
   2035 
   2036  * Fix buffer-object leak
   2037    https://bugs.freedesktop.org/show_bug.cgi?id=26946
   2038 
   2039  * Fix memory leak on server reset
   2040 
   2041  * Fix crash due to unchecked pixmap allocation
   2042    https://bugs.freedesktop.org/show_bug.cgi?id=29187
   2043 
   2044  * Fix for video artifacts when using dualscreen
   2045    https://bugs.freedesktop.org/show_bug.cgi?id=29213
   2046 
   2047  * Fix for incorrect characters in gnome-terminal when using compiz
   2048    https://bugs.freedesktop.org/show_bug.cgi?id=28438
   2049 
   2050  * Fix for hanging, full-screen applications, (flash, compiz, etc.)
   2051    https://bugs.freedesktop.org/show_bug.cgi?id=29584
   2052 
   2053  * Fix selection of backlight device on multi-GPU systems
   2054    https://bugs.freedesktop.org/show_bug.cgi?id=29273
   2055 
   2056  * Fix to avoid crash with extremely large glyphs
   2057    https://bugs.freedesktop.org/show_bug.cgi?id=29430
   2058 
   2059  * Fix for eDP panels incorrectly being given only a single, valid mode
   2060    https://bugs.freedesktop.org/show_bug.cgi?id=30069
   2061 
   2062  * Fix GPU hang involving clipped SRC copies
   2063    https://bugs.freedesktop.org/show_bug.cgi?id=30120
   2064 
   2065  * Fix to compile for 1.6 series X server.
   2066 
   2067  * Fix to retry framebuffer allocation after an initial failure.
   2068 
   2069  * Fix to disable dri2 after fallbacks are forced on.
   2070 
   2071 Snapshot 2.12.902 (2010-09-28)
   2072 ==============================
   2073 This is the second release candidate in preparation for the upcoming
   2074 2.13.0 release. The comes exactly one week after 2.12.902 and includes
   2075 only a handful of changes.
   2076 
   2077 One significant change is that the drive now requires libdrm 2.4.22
   2078 (or newer), as several people reported compilation failures of
   2079 xf86-video-intel 2.12.901 with libdrm 2.4.21.
   2080 
   2081 Other changes include a fix to compile for the 1.6 series X server, a
   2082 fix to retry framebuffer allocation after an initial failure, and a
   2083 fix to disable dri2 after fallbacks are forced on.
   2084 
   2085 Snapshot 2.12.901 (2010-09-21)
   2086 ==============================
   2087 This is the first release candidate in preparation for the upcoming
   2088 2.13.0 release. We will appreciate any feedback we can get from
   2089 testing of this snapshot.
   2090 
   2091 Bugs fixed in this snapshot (compared to 2.12.0)
   2092 ------------------------------------------------
   2093  * Attempt to fix infinite MI_WAIT_FOR_EVENT while watching video
   2094    https://bugs.freedesktop.org/show_bug.cgi?id=28964
   2095 
   2096    [Various new checks have been added to the video code here, but the
   2097    bug fix hasn't yet been verified by the original reporter.]
   2098 
   2099  * Fix buffer-object leak
   2100    https://bugs.freedesktop.org/show_bug.cgi?id=26946
   2101 
   2102  * Fix memory leak on server reset
   2103 
   2104  * Fix crash due to unchecked pixmap allocation
   2105    https://bugs.freedesktop.org/show_bug.cgi?id=29187
   2106 
   2107  * Fix for video artifacts when using dualscreen
   2108    https://bugs.freedesktop.org/show_bug.cgi?id=29213
   2109 
   2110  * Fix for incorrect characters in gnome-terminal when using compiz
   2111    https://bugs.freedesktop.org/show_bug.cgi?id=28438
   2112 
   2113  * Fix for hanging, full-screen applications, (flash, compiz, etc.)
   2114    https://bugs.freedesktop.org/show_bug.cgi?id=29584
   2115 
   2116  * Fix selection of backlight device on multi-GPU systems
   2117    https://bugs.freedesktop.org/show_bug.cgi?id=29273
   2118 
   2119  * Fix to avoid crash with extremely large glyphs
   2120    https://bugs.freedesktop.org/show_bug.cgi?id=29430
   2121 
   2122  * Fix for eDP panels incorrectly being given only a single, valid mode
   2123    https://bugs.freedesktop.org/show_bug.cgi?id=30069
   2124 
   2125  * Fix GPU hang involving clipped SRC copies
   2126    https://bugs.freedesktop.org/show_bug.cgi?id=30120
   2127 
   2128 Release 2.12.0 (2010-06-24)
   2129 ===========================
   2130 We are pleased to announce this major release of the xf86-video-intel
   2131 2D driver. It contains many correctness and performance improvements
   2132 compared to the 2.11 releases. We encourage everyone using 2.11 to
   2133 upgrade to 2.12.
   2134 
   2135 [This release contains several bug fixes since the earlier 2.11.901
   2136 release candidate---see below for details.]
   2137 
   2138 New requirements compared to 2.11
   2139 ---------------------------------
   2140  * Libdrm >= 2.4.21
   2141 
   2142 Major performance improvements
   2143 ------------------------------
   2144 There have been many performance improvements targeting the
   2145 915G/945G/Pineview graphics chipsets (thank to Chris Wilson!). Areas
   2146 improved include:
   2147 
   2148  * Major improvements to glyph rendering
   2149 
   2150  * Avoid software fallback when using extended desktops, (for example,
   2151    video playback)
   2152 
   2153  * Better performance when using large windows, (for example with
   2154    firefox scrolling)
   2155 
   2156  * Avoiding migration ping-pong with gigantic drawing
   2157 
   2158 The following speedups (measured with cairo-perf-trace/cairo-traces)
   2159 capture some of the improvements. These were measured on a Pineview
   2160 system with X server 1.8.1. This compares how this 2.12 release
   2161 improves performance compared to 2.11.0:
   2162 
   2163 	Trace			Speedup
   2164 	-----			-------
   2165 	ocitysmap		5.41x speedup
   2166 	firefox-talos-gfx       2.41x speedup
   2167 	gnome-terminal-vim      2.15x speedup
   2168 	poppler                 1.86x speedup
   2169 	firefox-planet-gnome	1.43x speedup
   2170 	midori-zoomed		1.39x speedup
   2171 	swfdec-giant-steps      1.36x speedup
   2172 	xfce4-terminal-a1	1.17x speedup
   2173 	evolution		1.09x speedup
   2174 	swfdec-youtube		1.06x speedup
   2175 
   2176 Other improvements
   2177 ------------------
   2178 Daniel Vetter improved Xvmc and overlay, adding GEM support.
   2179 
   2180 Bug fixes
   2181 ---------
   2182 There have been many conformance improvements targeting the
   2183 915G/945G/Pineview graphics chipsets. The rendercheck test suite
   2184 passes once again and there has been a significant reduction in the
   2185 number of errors detected by the cairo test suite (notably center
   2186 sampling and EXTEND_NONE behaviors are fixed).
   2187 
   2188 Other notable bug fixes include:
   2189 
   2190  * Fix for bug 28446 Garbled fonts with Mathematica
   2191    https://bugs.freedesktop.org/show_bug.cgi?id=28446
   2192 
   2193  * Fixes for page-flipping and other DRI2-handling bugs, (Thanks Jesse
   2194    Barnes, and Kristian Hgsberg)
   2195 
   2196  * Avoid corruption when using extended desktops, (for example, video
   2197    playback)
   2198 
   2199 (The bug fixes below are new since the 2.11.901 release candidate)
   2200 
   2201  * Fix corrupted output when screen rotated
   2202    https://bugs.freedesktop.org/show_bug.cgi?id=28461
   2203 
   2204  * Fix corrupted rendering in KDE due to missing flush.
   2205 
   2206  * Fixes i830_uxa_put_image for the following issues:
   2207 
   2208       Bug 28569 - [i965] IGN's flash-based video player crashes X
   2209       https://bugs.freedesktop.org/show_bug.cgi?id=28569
   2210     
   2211       Bug 28573 - [i965] Fullscreen flash and windowed SDL games fail to
   2212                   update the screen
   2213       https://bugs.freedesktop.org/show_bug.cgi?id=28573
   2214 
   2215  * Fix visual corruption of scrollbar in Chromium
   2216 
   2217  * Fix tiling limits to resolve this issue:
   2218 
   2219       Bug 28497 - Graphics corruption after opening a specific website
   2220       https://bugs.freedesktop.org/show_bug.cgi?id=28497
   2221 
   2222 Snapshot 2.11.901 (2010-06-14)
   2223 ==============================
   2224 This is the first release candidate in preparation for the upcoming
   2225 2.12.0 release. We will appreciate any feedback we can get from
   2226 testing of this snapshot to improve the 2.12.0 release.
   2227 
   2228 New requirements compared to 2.10
   2229 ---------------------------------
   2230  * Libdrm >= 2.4.19
   2231 
   2232 Major performance improvements
   2233 ------------------------------
   2234 There have been many performance improvements targeting the
   2235 915G/945G/Pineview graphics chipsets (thank to Chris Wilson!). Areas
   2236 improved include:
   2237 
   2238  * Major improvements to glyph rendering
   2239 
   2240  * Avoid software fallback when using extended desktops, (for example,
   2241    video playback)
   2242 
   2243  * Better performance when using large windows, (for example with
   2244    firefox scrolling)
   2245 
   2246  * Avoiding migration ping-pong with gigantic drawing
   2247 
   2248 The following speedups (measured with cairo-perf-trace/cairo-traces)
   2249 capture some of the improvements. These were measured on a Pineview
   2250 system with a very recent X server, (from git just before 1.8.1). This
   2251 compares how this 2.12 release candidate improves performance compared
   2252 to 2.11.0:
   2253 
   2254 	Trace			Speedup
   2255 	-----			-------
   2256 	ocitysmap		5.41x speedup
   2257 	firefox-talos-gfx       2.41x speedup
   2258 	gnome-terminal-vim      2.15x speedup
   2259 	poppler                 1.86x speedup
   2260 	firefox-planet-gnome	1.43x speedup
   2261 	midori-zoomed		1.39x speedup
   2262 	swfdec-giant-steps      1.36x speedup
   2263 	xfce4-terminal-a1	1.17x speedup
   2264 	evolution		1.09x speedup
   2265 	swfdec-youtube		1.06x speedup
   2266 
   2267 Other improvements
   2268 ------------------
   2269 Daniel Vetter improved Xvmc and overlay, adding GEM support.
   2270 
   2271 Bug fixes
   2272 ---------
   2273 There have been many conformance improvements targeting the
   2274 915G/945G/Pineview graphics chipsets. The rendercheck test suite
   2275 passes once again and there has been a significant reduction in the
   2276 number of errors detected by the cairo test suite (notably center
   2277 sampling and EXTEND_NONE behaviors are fixed).
   2278 
   2279 Other notable bug fixes include:
   2280 
   2281  * Fix for bug 28446 Garbled fonts with Mathematica
   2282    https://bugs.freedesktop.org/show_bug.cgi?id=28446
   2283 
   2284  * Fixes for page-flipping and other DRI2-handling bugs, (Thanks Jesse
   2285    Barnes, and Kristian Hgsberg)
   2286 
   2287  * Avoid corruption when using extended desktops, (for example, video
   2288    playback)
   2289 
   2290 Release 2.11.0 (2010-03-29)
   2291 ===========================
   2292 New in 2.11: DRI2 and page flipping
   2293 -----------------------------------
   2294 The most significant new feature of this release is support for new
   2295 DRI2 APIs, allowing page flipping to occur for swaps that are
   2296 full-screen and not rotated.
   2297 
   2298 Performance improvements in 2.11 compared to 2.10
   2299 -------------------------------------------------
   2300 Dramatically improved performance of large pixmaps on
   2301 memory-constrained hardware, (such as 945), by using tiling.
   2302 Note that this fix is new since the most recent release
   2303 candidate for this release (2.10.903).
   2304 
   2305     https://bugs.freedesktop.org/show_bug.cgi?id=25375
   2306 
   2307 Elimination of software fallback with alpha-only pixmap (a fix which
   2308 eliminated a full second from the Moblin boot time):
   2309 
   2310     https://bugs.freedesktop.org/show_bug.cgi?id=26189
   2311 
   2312 Notable bug fixes in 2.11 compared to 2.10
   2313 ------------------------------------------
   2314 Fix for undesired black borders on some images, (caued several
   2315 problems with firefox):
   2316 
   2317     http://bugs.freedesktop.org/show_bug.cgi?id=17933
   2318 
   2319 And other fixes to provide more conformance with existing
   2320 software-rendering, (as measures by the cairo test suite), such as the
   2321 sampling location for nearest-neighbor sampling.
   2322 
   2323 Other changes
   2324 -------------
   2325 Eric Anholt and Daniel Vetter both removed large piles of old and
   2326 useless code now that the driver requires kernel modesetting
   2327 (KMS). This continues to reduce the mainteance burden of the driver,
   2328 making it easier to isolate and fix bugs.
   2329 
   2330 Snapshot 2.10.903 (2010-03-22)
   2331 ==============================
   2332 Some notable bug fixes
   2333 ----------------------
   2334 * Fix unpredictable results in page-flipping code due to access of an
   2335   uninitialized variable.
   2336 
   2337 * Two fixes that address a number of long-outstanding failures in the
   2338   cairo test suite:
   2339 
   2340     Remove coord-adjust for nearest centre-sampling.
   2341 
   2342     Fill alpha on xrgb images. Closes:
   2343 
   2344 	Bug 17933 - x8r8g8b8 doesn't sample alpha=0 outside surface bounds
   2345 	http://bugs.freedesktop.org/show_bug.cgi?id=17933
   2346 
   2347 * Fix a regression introduced in 2.10.902:
   2348 
   2349     Fatal server error:
   2350     i915_emit_composite_setup: ADVANCE_BATCH:
   2351     under-used allocation 100/104
   2352 
   2353 	Bug 21723 [i915 bisected] rendering makes X crash
   2354 	http://bugs.freedesktop.org/show_bug.cgi?id=27123
   2355 
   2356 Other minor fixes (avoid trying to print an error message with a freed
   2357 string, set a variable to NULL after freeing), and documentation
   2358 updates are also included.
   2359 
   2360 Snapshot 2.10.902 (2010-03-15)
   2361 ==============================
   2362 Some significant bug fixes
   2363 --------------------------
   2364 Fix video color problems due to YUV plane ordering issue. This fixed a
   2365 regression that showed up recently (only in these release candidates).
   2366 
   2367 Fix recent regression leading to corruption under compiz:
   2368 
   2369   https://bugs.freedesktop.org/show_bug.cgi?id=26814
   2370 
   2371 Further DRI2 improvements/fixes from Mario Kleiner and Jesse Barnes,
   2372 (including support for SwapBuffers request with divisor != 0).
   2373 
   2374 Fix build against X server 1.6 branch.
   2375 
   2376 Avoid flooding logs after an error occurs.
   2377 
   2378 And dramatic code cleanups
   2379 --------------------------
   2380 Eric Anholt removed several cases of old, useless code, (conditions
   2381 that could not occur now that we require KMS, etc.).
   2382 
   2383 Daniel Vetter eliminated piles of code by modernizing the XvMC
   2384 memory-management and completely removing the old i830_memory
   2385 allocator (i830_allocate_memory, i830_free_memory), etc.
   2386 
   2387 Snapshot 2.10.901 (2010-02-26)
   2388 ==============================
   2389 The most significant new feature of this release is support for new
   2390 DRI2 APIs, allowing page flipping to occur for swaps that are
   2391 full-screen and not rotated.
   2392 
   2393 Some significant bug fixes
   2394 --------------------------
   2395 * Avoid fallback due to failing to extract pixel value from an
   2396   alpha-only solid, (this fix eliminated 1 second from Mobilin boot
   2397   time).
   2398 
   2399   https://bugs.freedesktop.org/show_bug.cgi?id=26189
   2400 
   2401 * Handle full-height blits without tearing in CopyRegion
   2402 
   2403   https://bugs.freedesktop.org/show_bug.cgi?id=22475
   2404 
   2405 Several other fixes and cleanups are included as well, (including the
   2406 removal of stale utility code that is now maintained in the separate
   2407 intel-gpu-tools module).
   2408 
   2409 Release 2.10.0 (2010-01-04)
   2410 ===========================
   2411 New requirements of 2.10 compared to 2.9
   2412 ----------------------------------------
   2413  * Linux kernel with kernel-modesetting (KMS)
   2414 
   2415    All user-modesetting code has now been removed from the driver.
   2416    We highly recommend kernel version 2.6.32 or later.
   2417 
   2418  * Libdrm >= 2.4.16
   2419 
   2420 New features in 2.10 compared to 2.9
   2421 ------------------------------------
   2422  * New driver debugging options available in xorg.conf
   2423    (DebugFlushBatches, DebugFlushCaches, DebugWait). See "man intel"
   2424    for more details.
   2425 
   2426  * Video overlay support with KMS. This currently requires Linux
   2427    2.6.33, but a backport to 2.6.32 is available here:
   2428 
   2429    http://gitorious.org/daniel-s-linux-stuff/linux-kernel/commits/intel-kms-overlay-for-2.6.32
   2430 
   2431 Notable fixes in 2.10 compared to 2.9
   2432 -----------------------------------
   2433  * Fix crash when XRenderComposite is called with a -1 value for
   2434    width/height, (crash at login when using compiz).
   2435 
   2436    http://bugs.freedesktop.org/show_bug.cgi?id=24724
   2437 
   2438  * Fix to support larger extended desktops, (such as a 2560x1600 plus a
   2439    1920x1200 monitor).
   2440 
   2441 
   2442  * Fix glyph corruption due to insufficient cache flushing:
   2443 
   2444    https://bugs.freedesktop.org/show_bug.cgi?id=24315
   2445 
   2446 Several other correctness and performance fixes are also included.
   2447 
   2448 Note: The driver code of the 2.10.0 release is identical to that of
   2449 the 2.9.99.901 release candidate. The only changes in 2.10.0 compared
   2450 to 2.9.99.902 are a minor change to the configure script, and some
   2451 small updates to the documentation.
   2452 
   2453 Snapshot 2.9.99.902 (2009-12-10)
   2454 ================================
   2455 This is the second release candidate in preparation for the upcoming
   2456 2.10.0 release. We will appreciate any feedback we can get from
   2457 testing of this snapshot to improve the 2.10.0 release.
   2458 
   2459 Compared to the previous snapshot, this snapshot now correctly
   2460 verifies that libdrm 2.4.16 (or newer) is available. The previous
   2461 snapshot also required libdrm 2.4.16 for correct functionality, but
   2462 neglected to notify the user of this at configure, compile, or install
   2463 time and would instead simply fail to run.
   2464 
   2465 Snapshot 2.9.99.901 (2009-11-30)
   2466 ================================
   2467 This is the first release candidate in preparation for the upcoming
   2468 2.10.0 release. We will appreciate any feedback we can get from
   2469 testing of this snapshot to improve the 2.10.0 release.
   2470 
   2471 With this snapshot, the xf86-video-intel driver requires kernel
   2472 modesetting (KMS) as all of the user modesetting (UMS) support has
   2473 been removed from the driver.
   2474 
   2475 Release 2.9.0 (2009-09-28)
   2476 ==========================
   2477 We are pleased to announce the 2.9.0 release of the xf86-video-intel
   2478 driver. (If you have been following along at home, this release is
   2479 identical to the 2.8.99.902 release candidate other than the version
   2480 number).
   2481 
   2482 New features in 2.9 compared to 2.8
   2483 -----------------------------------
   2484 * Support for the B43 chipset.
   2485 
   2486 Major fixes in 2.9.0 compared to 2.8.0
   2487 --------------------------------------
   2488 * Multiple fixes to make the driver stable for 8xx chipsets, (855GM,
   2489   865G, etc.). The 2.8 driver series was extremely unstable with many
   2490   of these chipsets.
   2491 
   2492   https://bugs.freedesktop.org/show_bug.cgi?id=22904 (and many duplicates)
   2493   https://bugs.freedesktop.org/show_bug.cgi?id=22947
   2494 
   2495 * Add support for BACKLIGHT property when using kernel modesetting
   2496   (KMS). This allows backlight adjustment with programs such as
   2497   "xbacklight -set <percentage>" or "xrandr --set BACKLIGHT <value>".
   2498 
   2499   https://bugs.freedesktop.org/show_bug.cgi?id=20963
   2500 
   2501 * Fix so that "xrandr --scale" works when using KMS.
   2502 
   2503   https://bugs.freedesktop.org/show_bug.cgi?id=22893
   2504 
   2505 * Fix segfaults of X server when logging out.
   2506 
   2507   https://bugs.freedesktop.org/show_bug.cgi?id=20516
   2508 
   2509 * Avoid falling back to software for 1-bit alpha-only masks.
   2510 
   2511   https://bugs.freedesktop.org/show_bug.cgi?id=23184
   2512 
   2513 * Fix pixel sampling position for 8xx chipsets, (fixes some cairo-test
   2514   suite failures).
   2515 
   2516 Snapshot 2.8.99.901 (2009-09-09)
   2517 ================================
   2518 This is the first release candidate in preparation for the upcoming
   2519 2.9.0 release. We will appreciate any feedback we can get from testing
   2520 of this snapshot to improve the 2.9.0 release.
   2521 
   2522 See the commit log for changes in this release, and developers, please
   2523 provide me summaries for any major features in this release that you
   2524 think should appear in NEWS and in the 2.9.0 release notes.
   2525 
   2526 Note: We are still investigating failures with 865G chipsets, (these
   2527 failures existed in the 2.8 series as well). We are hoping to fix
   2528 these failures before the 2.9.0 release.
   2529 
   2530 Release 2.8.0 (2009-07-20)
   2531 ==========================
   2532 We are pleased to present this major release of the xf86-video-intel
   2533 driver. This release is very similar to the 2.7.99.902 release
   2534 candidate but includes a couple of additional bug fixes, (for bugs
   2535 #22760 and @22483).
   2536 
   2537 Compared to the 2.7 releases this driver contains several new features
   2538 and many bug fixes. The driver now depends on X server 1.6 or later,
   2539 and eliminates several obsolete code paths, (XAA and EXA removed in
   2540 favor of UXA, DRI1 support eliminated). The driver certainly will work
   2541 best with an i915 module from a recent kernel (2.6.31) and with
   2542 kernel-modesetting (KMS, specified by loading i915 with the option
   2543 "modeset=1").
   2544 
   2545 New features in 2.8.0 compared to 2.7
   2546 -------------------------------------
   2547 * Remove XAA/EXA/DRI1 and NoAccel, and only support UXA/DRI2 now
   2548   (requiring xserver 1.6).
   2549 
   2550 * VLD support added into XvMC for Mpeg2, which decreases CPU usage
   2551   when playing video.
   2552 
   2553 Major fixes in 2.8.0 compared to 2.7
   2554 ------------------------------------
   2555 * Fix broken front-buffer rendering
   2556   https://bugs.freedesktop.org/show_bug.cgi?id=19174
   2557 
   2558 * Fix disabling of XvMC disabled
   2559   https://bugs.freedesktop.org/show_bug.cgi?id=20790
   2560 
   2561 * Fix broken VT switch on some machines
   2562   https://bugs.freedesktop.org/show_bug.cgi?id=19578
   2563 
   2564 * Improve performance of trapezoid rendering for UXA
   2565   https://bugs.freedesktop.org/show_bug.cgi?id=21376
   2566 
   2567 * Vblank sync'd GL buffer swap (fixing video tearing under composite)
   2568   https://bugs.freedesktop.org/show_bug.cgi?id=20664
   2569 
   2570 * Fix G41 DRM support
   2571   https://bugs.freedesktop.org/show_bug.cgi?id=21095
   2572 
   2573 * Fix crash on some 8xx
   2574   https://bugs.freedesktop.org/show_bug.cgi?id=18974
   2575 
   2576 Various fixes for GPU hangs, and more...
   2577 
   2578 Snapshot 2.7.99.902 (2009-07-13)
   2579 --------------------------------
   2580 This is the first release candidate in preparation for the upcoming
   2581 2.8.0 release. Most major and critical bugs should be fixed, but some
   2582 minor bugs may still be present. We will appreciate any feedback we
   2583 can get from testing of this snapshot to improve the 2.8.0 release.
   2584 
   2585 Snapshot 2.7.99.901 (2009-06-10)
   2586 --------------------------------
   2587 This is the first release candidate in preparation for the upcoming
   2588 2.8.0 release. Most critical bugs should be fixed, but some major
   2589 bugs may still be present. We will appreciate any feedback we can
   2590 get from testing of this snapshot to improve the 2.8.0 release.
   2591 
   2592 Some of the major fixes in this snapshot include:
   2593 
   2594 	* Several fixes for intermittent GPU hangs/crashes, (some of
   2595 	  which already appeared in the 2.7.1 release)
   2596 
   2597 	* Fix to avoid X crash when viewing large images in browser
   2598 
   2599 	* Fix X server failure when running old (non-GEM) kernel
   2600 
   2601 	* Fixes for SDVO LVDS mode detection
   2602 
   2603 	* Fix major performance regression of trapezoid rendering
   2604           compared to XAA/EXA
   2605 
   2606 	* New support for tear-free video when using KMS
   2607 
   2608 	* New support for tear-free DRI2 CopyRegion
   2609 
   2610 Snapshot 2.7.99.1 (2009-04-28)
   2611 ------------------------------
   2612 This is a development snapshot very early in the process toward
   2613 developing 2.8. There have been some big changes to the code, and
   2614 we're anxious to get feedback on these changes as early as possible.
   2615 
   2616 Here is a summary of the biggest changes:
   2617 
   2618   * Driver now depends on X server 1.6 or later
   2619 
   2620   * Eliminate XAA and EXA support (in favor of UXA)
   2621 
   2622   * Eliminate DRI1 support
   2623 
   2624   * Fixes for running without DRI at all
   2625 
   2626 These code removals represent a deletion of a substantial amount of
   2627 code, (and hopefully piles of bugs), as well as reduce the maintenance
   2628 effort going forward as the number of combinatorial configurations for
   2629 the driver are greatly reduced. This means that users are much more
   2630 likely to be running code that has actually been tested, and it will
   2631 be much easy for developers to replicate bugs that users experience.
   2632 
   2633 One of the things that would be most useful in testing this release is
   2634 to revisit any outstanding bugs that you have previously reported. If
   2635 the buggy behavior is gone, (or the bug is no longer relevant---such
   2636 as a bug that's specific to XAA only), please feel free to indicate so
   2637 in bugzilla or even just close the bug.
   2638 
   2639 If you confirm that the bug is still present, please indicate so in
   2640 the bug report. (I was going to ask that you select a 1.7.99 version,
   2641 but it looks like bugzilla only has versions for products not
   2642 compoenents, while we use a "xorg" product and a "driver/intel"
   2643 component.) We definitely want to make any such confirmed bugs a
   2644 priority, so it would be nice to have a consistent mechanism to search
   2645 for these bugs. Suggestions are welcome on the best approach.
   2646 
   2647 Thanks in advance for any testing or feedback on this snapshot.
   2648 
   2649 Release 2.7.0 (2009-04-15)
   2650 --------------------------
   2651 Compared to the 2.6 series, 2.7.0 has a large number of bug fixes, but
   2652 also a few significant features, such as:
   2653 
   2654         SDVO-TV support, available on ADD2 card (bug#9992) and
   2655         D945GCLF2 board (bug#17776).
   2656 
   2657         Basic SDVO-LVDS support
   2658 
   2659         XV video display without tearing
   2660 	[Though this isn't working for all users yet, see
   2661 	https://bugs.freedesktop.org/show_bug.cgi?id=21076 ]
   2662 
   2663 	Various fixes for UXA, DRI2, and Kernel modesetting.
   2664 
   2665 We encourage users to use kernel modesetting and UXA acceleration with
   2666 this release, which should give the best performance and
   2667 robustness. When KMS is available, UXA is the default acceleration
   2668 used by the driver, (EXA is the default otherwise).
   2669 
   2670 Known issue:
   2671 
   2672 	Some Linux kernel versions (such as 2.6.29) are known to have
   2673 	broken PAT code that causes recent versions of this driver to
   2674 	fail, (which can manifest as the X server simply not
   2675 	starting). This can be verified by adding the "nopat" option
   2676 	to the kernel command-line and seeing the failure go away. We
   2677 	hope that newer kernels in the 2.6.29.x as well as 2.6.30 and
   2678 	above will have working PAT code.
   2679 
   2680 Some of the most notable bugs fixed in 2.7.0 include:
   2681 
   2682 	[GM45 965GM] bad htotal causes panel startup failure
   2683 	https://bugs.freedesktop.org/show_bug.cgi?id=17292
   2684 
   2685 	[xrandr TV] need TV output property control
   2686 	https://bugs.freedesktop.org/show_bug.cgi?id=12763
   2687 
   2688 	[TV] "xrandr --set TV_FORMAT" gets BadMatch error
   2689 	https://bugs.freedesktop.org/show_bug.cgi?id=16566
   2690 
   2691 	[945 tiling] Low performance due to no A17 workaround
   2692 	https://bugs.freedesktop.org/show_bug.cgi?id=16835
   2693 
   2694 	[TV]Flicker when launching applications in the 2.4-branch
   2695 	https://bugs.freedesktop.org/show_bug.cgi?id=17405
   2696 
   2697 	[945GM FBC] FBC causes underruns & flicker
   2698 	https://bugs.freedesktop.org/show_bug.cgi?id=18651
   2699 
   2700 	[xv] Textured video suffers from tearing
   2701 	https://bugs.freedesktop.org/show_bug.cgi?id=19635
   2702 
   2703 	[G45] Random hangs with UXA
   2704 	https://bugs.freedesktop.org/show_bug.cgi?id=19734
   2705 
   2706 	[945GM] Any 3D app is slow in resolution higher than 800x600
   2707 	with UXA+DRI2, due to tiling
   2708 	https://bugs.freedesktop.org/show_bug.cgi?id=19738
   2709 
   2710 	[i915 UXA,EXA] rotation messes display with tiling on
   2711 	https://bugs.freedesktop.org/show_bug.cgi?id=20265
   2712 
   2713 	[G45] DRI2/UXA gives solid white instead of transparency
   2714 	https://bugs.freedesktop.org/show_bug.cgi?id=20321
   2715 
   2716 	LVDS output not detected
   2717 	https://bugs.freedesktop.org/show_bug.cgi?id=20517
   2718 
   2719 	xf86-video-intel-2.6.3: Xv crashes X server
   2720 	https://bugs.freedesktop.org/show_bug.cgi?id=20525
   2721 
   2722 	[G965 non-GEM] systray in KDE 4 completely broken
   2723 	https://bugs.freedesktop.org/show_bug.cgi?id=20527
   2724 
   2725 	[SDVO-TV]the desktop is teared in four sections on the screen
   2726 	https://bugs.freedesktop.org/show_bug.cgi?id=20550
   2727 
   2728 	Intel video driver 2.6.3 crashes with XVideo
   2729 	https://bugs.freedesktop.org/show_bug.cgi?id=20563
   2730 
   2731 	[855GM] Xv crash with non-KMS
   2732 	https://bugs.freedesktop.org/show_bug.cgi?id=20585
   2733 
   2734 	2.6.99.902 breaks native 1680x1050 mode on TMDS -- EDID miss
   2735 	https://bugs.freedesktop.org/show_bug.cgi?id=20594
   2736 
   2737 	[945GM TV] 2.6.99.902 sets a too high CONTRAST-value
   2738 	https://bugs.freedesktop.org/show_bug.cgi?id=20670
   2739 
   2740 	[915GM] fail to detect LVDS with new VBT code
   2741 	https://bugs.freedesktop.org/show_bug.cgi?id=20752
   2742 
   2743 	[regression i965]tiled output when start X
   2744 	https://bugs.freedesktop.org/show_bug.cgi?id=20803
   2745 
   2746 	2.6.99.902: LVDS wrongly detected as disconnected
   2747 	https://bugs.freedesktop.org/show_bug.cgi?id=20826
   2748 
   2749 	vt switching fails and crashes X
   2750 	https://bugs.freedesktop.org/show_bug.cgi?id=20863
   2751 
   2752 	[HDMI] The screen will flicker when some application runs on
   2753 	G45-64
   2754 	https://bugs.freedesktop.org/show_bug.cgi?id=20875
   2755 
   2756 	TexturedVideo is offsetted wrongly on dualhead
   2757 	https://bugs.freedesktop.org/show_bug.cgi?id=20980
   2758 
   2759 	[EXA] xvideo hang X
   2760 	https://bugs.freedesktop.org/show_bug.cgi?id=21027
   2761 
   2762 	[EXA] x11perf performance regression
   2763 	https://bugs.freedesktop.org/show_bug.cgi?id=21029
   2764 
   2765 	And many others...
   2766