README revision 05cf1079
1xf86-video-geode -- AMD Geode GX and LX graphics driver for X.org 2================================================================= 3README last updated: 2011-11-24 4 51.INTRODUCTION 6 7This is the X graphics driver for the AMD Geode GX and LX processors. 8The GX component supports both XAA and EXA for graphics acceleration. 9The LX component supports EXA, including compositing. Both support Xv 10overlay and dynamic rotation with XRandR. Additionally, a V4L2 driver 11for the LX's video input port (VIP) feature is provided as "ztv". 12 132.DEPENDENCIES 14 15Since version 2.9.0, this driver depends on X server 1.3 or greater, 16because it utilizes the new common DDC probing libraries from X.Org. 17 183.ROADMAP 19 20Support for old GX1 Geodes by Cyrix and NSC will be reintroduced soon, 21at which point xf86-video-cyrix and xf86-video-nsc will be retired. 22 23Until then, the current situation for Geode coverage is as follow: 24 25xf86-video-geode 26 * Geode LX (a.k.a. GX3) PCI ID 0x1022:0x2081 27 * Geode GX (a.k.a. GX2) PCI ID 0x100B:0x0030 (re-branded GX2) 28 29xf86-video-nsc 30 * Geode GX2 (a.k.a. GX2) PCI ID 0x100B:0x0030 (a.k.a. "Red Cloud") 31 * Geode SCx200 (a.k.a. GX1) PCI ID 0x100B:0x0504 32 * Geode SC1400 (a.k.a. GX1) PCI ID 0x100B:0x0104 33 34xf86-video-cyrix 35 * Geode MediaGX (a.k.a. GX1) PCI ID 0x1078:0x0104 36 37Please note that both NSC and GEODE support GX2. This is indeed correct. 38However, only GEODE has up-to-date code, while NSC is deprecated. 39 404.MAXIMUM RESOLUTIONS 41 42The driver supports all maximum resolutions advertised by AMD, namely: 43 44LX: 1920x1440 (CRT) and 1600x1200 (TFT) 45GX: 1600x1200 (CRT) and 1280x1024 (TFT) 46SC: 1280x1024 (CRT/TFT) *** Currently unsupported by this driver *** 47 485.CONFIGURATION OPTIONS 49 50You can specify driver options in /etc/X11/xorg.conf in the usual fashion: 51 52Section "Device" 53 Identifier "AMD Geode" 54 Driver "geode" 55 Option "OptionName" "value" 56 ... 57EndSection 58 59The following options may be added to such a Device section: 60 615.1.COMMON OPTIONS 62 63FBSize: Specify the size of the video space (in bytes) 64NoAccel: Disable hardware assisted acceleration 65NoCompression: Disable video bandwidth compression 66NoPanel: Disable panel support 67Rotate: Select an initial orientation - LEFT, INVERT, CCW 68SWCursor: Enable software cursors (essentially disabling HW cursor support) 69 705.2.GX-SPECIFIC OPTIONS 71 72AccelMethod: "XAA" (default) or "EXA" 73PanelGeometry: Specify the geometry of the attached panel ("<width>x<height>") 74OSMImageBuffers: Set the number of image buffers (XAA only) 75OSMColorExpBuffers: Set the number of color expansion buffers (XAA only) 76 775.3.LX-SPECIFIC OPTIONS 78 79ExaScratch: Specify the amount of extra EXA scratch buffer (in bytes) 80 816.FREQUENTLY ASKED QUESTIONS (FAQ) 82 83Q: Why doesn't the GEODE driver work at WXGA (wide screen) resolutions? 84 85A: Make sure that TFT Panel support is disabled in the BIOS settings, 86 otherwise resolutions will be restricted to traditional VGA modes. 87 The GEODE offers a choice between CRT-only, CRT+TFT, TFT-only for 88 output device and selecting CRT-only removes the VGA restriction. 89 90Q: How can these hardcoded modes be expanded to support a WXGA laptop? 91 92A: By adding the desired modes to /etc/X11/xorg.conf as follow: 93 94 1) Use either the "cvt" or "gtf" command to determine the modeline: 95 96 cvt 1024 600 60 97 98 Where 1024x600 is the resolution and 60 the refresh rate. 99 The resulting modeline using "gtf" is: 100 101Modeline "1024x600" 48.96 1024 1064 1168 1312 600 601 604 622 -hsync +vsync 102 103 2) Add it to the bottom of the "Monitor" section in /etc/X11/xorg.conf. 104 In this example, we created entries for two modes and configured the 105 larger resolution to be our preferred choice. 106 107############################################################# 108# /etc/X11/xorg.conf for 1024x600 and 800x480 laptop panels # 109############################################################# 110#### By J.KASPER and B.HIBRY #### for Hercules eCafe 800 #### 111############################################################# 112Section "Module" 113 Load "ztv" 114EndSection 115Section "Device" 116 Identifier "card0" 117 Driver "geode" 118 BusID "PCI:0:1:1" 119 Option "PanelMode" "33450 800 840 968 1056 480 490 492 525" 120EndSection 121Section "Monitor" 122 Identifier "monitor0" 123 Modeline "1024x768" 64.56 1024 1056 1296 1328 768 783 791 807 -hsync +vsync 124 Modeline "1024x600" 48.96 1024 1064 1168 1312 600 601 604 622 -hsync +vsync 125 Modeline "800x480" 33.45 800 840 968 1056 480 490 492 525 -hsync +vsync 126 Option "dpms" 127EndSection 128Section "Screen" 129 Identifier "Default Screen" 130 Monitor "monitor0" 131 Device "card0" 132 DefaultDepth 24 133 Subsection "Display" 134 Depth 24 135 Modes "1024x600" "1024x768" "800x480" 136 EndSubsection 137EndSection 138### EOF ### 139 140Q: Why doesn't screen rotation work? 141 142A: Make sure that a sufficient amount of video RAM is reserved in the BIOS, 143 otherwise rotation will fail and this error message appear in Xorg.log: 144 145 Couldn't allocate the shadow memory for rotation 146 You need XX bytes, but only YY bytes are available 147 148Q: How do I produce useful information whenever submitting a bug report? 149 150A: See https://www.x.org/wiki/Development/Documentation/ServerDebugging 151 and follow the instructions found there. 152 153Q: How do I test development snapshots from the upstream GIT repository? 154 155A: Run the following commands from a command line interpreter shell: 156 1. git clone git://anongit.freedesktop.org/git/xorg/driver/xf86-video-geode 157 2. Debian/Ubuntu: apt-get install autoconf automake libtool xutils-dev 158 apt-get install build-dep xserver-xorg-video-geode 159 Fedora/Red Hat: yum install autoconf automake libtool xorg-x11-util-macros 160 yum-builddep xorg-x11-drv-geode 161 3. cd xf86-video-geode 162 4. ./autogen.sh 163 5. make distcheck 164 ...then install the driver manually. 165 166Q: What is the preferred method for submitting patches to this driver? 167 168A: See https://www.x.org/wiki/Development/Documentation/SubmittingPatches 169 and submit the patches to the Geode X.org mailing list or to gitlab 170 in the xf86-video-geode project. 171 1727.PROJECT CONTACTS 173 174Project homepage: 175https://www.x.org/wiki/GeodeDriver 176 177Mailing list: 178https://lists.x.org/mailman/listinfo/xorg-driver-geode 179 180Bug reports: 181https://gitlab.freedesktop.org/xorg/driver/xf86-video-geode/issues 182 183Code repository: 184https://gitlab.freedesktop.org/xorg/driver/xf86-video-geode 185 186IRC channel: 187#geode on the Freenode network. 188 189.EOF. 190