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Fri May 12 19:32:26 2006 UTC (8 years, 2 months ago) by nightmorph
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Finally added hardware checks for dri-howto.xml. *and* they're non-nvidia-specific, though they work for nvidia cards. radeon-ricers can rejoice, though ymmv. not responsible for breakages. not responsible for lost or stolen articles. void where prohibited.

1 peesh 1.1 <?xml version="1.0" encoding="UTF-8"?>
2 nightmorph 1.30 <!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/dri-howto.xml,v 1.29 2006/05/07 12:39:17 nightmorph Exp $ -->
3 peesh 1.1 <!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
4    
5     <guide link="/doc/en/dri-howto.xml">
6     <title>Hardware 3D Acceleration Guide</title>
7     <author title="Author">
8 swift 1.8 <mail link="spyderous@gentoo.org">Donnie Berkholz</mail>
9 peesh 1.1 </author>
10     <author title="Editor">
11 swift 1.8 <mail link="peesh@gentoo.org">Jorge Paulo</mail>
12 peesh 1.1 </author>
13    
14 swift 1.8 <abstract>
15 swift 1.17 This document is a guide to getting 3D acceleration working using X11-DRM
16     with Xorg in Gentoo Linux.
17 swift 1.8 </abstract>
18 peesh 1.1
19 fox2mike 1.27 <!-- The content of this document is licensed under the CC-BY-SA license -->
20     <!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
21 swift 1.12 <license/>
22    
23 nightmorph 1.29 <version>1.3</version>
24 nightmorph 1.30 <date>2006-05-12</date>
25 peesh 1.1
26     <chapter>
27 swift 1.8 <title>Introduction</title>
28     <section>
29     <title>What is hardware 3D acceleration and why do I want it?</title>
30     <body>
31    
32     <p>
33     With hardware 3D acceleration, three-dimensional rendering uses the graphics
34     processor on your video card instead of taking up valuable CPU resources
35     drawing 3D images. It's also referred to as "hardware acceleration" instead of
36     "software acceleration" because without this 3D acceleration your CPU is forced
37     to draw everything itself using the Mesa software rendering libraries, which
38 swift 1.17 takes up quite a bit of processing power. While Xorg typically supports 2D
39 swift 1.8 hardware acceleration, it often lacks hardware 3D acceleration.
40     Three-dimensional hardware acceleration is valuable in situations requiring
41     rendering of 3D objects such as games, 3D CAD and modeling.
42     </p>
43    
44     </body>
45     </section>
46     <section>
47     <title>How do I get hardware 3D acceleration?</title>
48     <body>
49    
50     <p>
51     In many cases, both binary and open-source drivers exist. Open-source drivers
52     are preferable since we're using Linux and open source is one of its underlying
53     principles. Sometimes, binary drivers are the only option, like with nVidia's
54     cards. Binary drivers include media-video/nvidia-kernel and
55     media-video/nvidia-glx for nVidia cards, media-video/mgavideo for Matrox cards
56     and media-video/ati-drivers for ATI cards. Other open-source drivers include
57     media-video/kyro-kernel for KyroII cards and media-video/ati-gatos for ATI
58     cards, which aim to support ATI's video capabilities more fully.
59     </p>
60    
61     </body>
62     </section>
63     <section>
64     <title>What is DRI?</title>
65     <body>
66    
67     <p>
68 neysx 1.25 The <uri link="http://dri.freedesktop.org/wiki/">Direct Rendering
69     Infrastructure</uri>, also known as the DRI, is a framework for allowing direct
70     access to graphics hardware in a safe and efficient manner. It includes changes
71     to the X server, to several client libraries and to the kernel. The first major
72     use for the DRI is to create fast OpenGL implementations.
73 swift 1.8 </p>
74    
75     </body>
76     </section>
77     <section>
78 swift 1.17 <title>What is X11-DRM and how does it relate to regular Xorg?</title>
79 swift 1.8 <body>
80    
81     <p>
82 swift 1.17 X11-DRM is an <e>enhancement</e> to Xorg that adds 3D acceleration for
83 swift 1.8 cards by adding the kernel module necessary for direct rendering.
84     </p>
85    
86     </body>
87     </section>
88     <section>
89     <title>Purpose</title>
90     <body>
91    
92     <p>
93 neysx 1.25 This guide is for people who can't get direct rendering working with just Xorg.
94     X11-DRM works for 3dfx, gamma, i8x0, matrox, rage128, radeon, mach64 and sis300
95 nightmorph 1.29 series drivers. VIA card owners should not use <c>x11-drm</c>, but should
96     instead use the DRI provided in recent kernels (&gt;2.6.13). See the <uri
97     link="http://dri.freedesktop.org/">DRI homepage</uri> for more info and
98     documentation.
99 swift 1.8 </p>
100    
101     </body>
102     </section>
103     <section>
104     <title>Feedback</title>
105     <body>
106    
107     <p>
108     With suggestions, questions, etc., e-mail <mail
109     link="spyderous@gentoo.org">Donnie Berkholz</mail>.
110     </p>
111    
112     </body>
113     </section>
114 peesh 1.1 </chapter>
115    
116 swift 1.8 <chapter>
117 swift 1.17 <title>Install Xorg and configure your kernel</title>
118 swift 1.8 <section>
119 swift 1.17 <title>Install Xorg</title>
120 swift 1.8 <body>
121 peesh 1.1
122 swift 1.17 <p>
123     Please read our <uri link="/doc/en/xorg-config.xml">Xorg Configuration
124     Guide</uri> to get Xorg up and running.
125     </p>
126 peesh 1.1
127 swift 1.8 </body>
128     </section>
129     <section>
130     <title>Configure your kernel</title>
131     <body>
132    
133     <p>
134     Probe for your chipset and enable just that one.
135     </p>
136 peesh 1.1
137 swift 1.9 <pre caption="Checking your AGP chipset">
138 peesh 1.1 # <i>emerge pciutils; lspci | grep AGP</i>
139     # <i>00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03)</i>
140 neysx 1.21 <comment>(Your output may not match the above due to different hardware.)</comment>
141 swift 1.8 </pre>
142    
143     <p>
144 swift 1.16 If your chipset is not supported by the kernel you might have some succes by
145     passing <c>agp=try_unsupported</c> as a kernel parameter. This will use Intel's
146     generic routines for AGP support. To add this parameter, edit your bootloader
147     configuration file!
148     </p>
149    
150     <p>
151 swift 1.8 Most, if not all, kernels should have these options. This was configured using
152     gentoo-sources-2.4.20-r5.
153     </p>
154    
155 swift 1.9 <pre caption="Configuring the kernel">
156 peesh 1.1 # <i>ls -l /usr/src/linux </i>
157     lrwxrwxrwx 1 root root 22 May 29 18:20 /usr/src/linux -> linux-2.4.20-gentoo-r5
158 neysx 1.21 <comment>(Make sure /usr/src/linux links to your current kernel.)</comment>
159 peesh 1.1 # <i>cd /usr/src/linux</i>
160     # <i>make menuconfig</i>
161 swift 1.8 </pre>
162    
163 swift 1.9 <pre caption="make menuconfig options">
164 peesh 1.1 Processor type and features ---&gt;
165 swift 1.8 &lt;*&gt; MTRR (Memory Type Range Register) support
166 peesh 1.1 Character devices ---&gt;
167 dertobi123 1.11 &lt;M&gt; /dev/agpgart (AGP Support)
168 fox2mike 1.27 [M] Intel 440LX/BX/GX and I815/I820/I830M/I830MP/I840/I845/I850/I860 support
169 neysx 1.21 <comment>(Enable your chipset instead of the above.)</comment>
170 fox2mike 1.23 &lt; &gt; Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
171 swift 1.8 </pre>
172 peesh 1.1
173 swift 1.8 <p>
174 swift 1.26 Make sure the Direct Rendering Manager (DRM) is <e>off</e>.
175     The X11-DRM package will provide its own.
176 swift 1.8 </p>
177    
178     </body>
179     </section>
180     <section>
181     <title>Compile and install your kernel</title>
182     <body>
183 peesh 1.1
184 swift 1.9 <pre caption="Compiling and installing kernel">
185 swift 1.26 <comment>(This example is for a 2.4 kernel)</comment>
186 peesh 1.1 # <i>make dep &amp;&amp; make clean bzImage modules modules_install</i>
187     # <i>mount /boot</i>
188     # <i>cp arch/i386/boot/bzImage /boot</i>
189 swift 1.8 </pre>
190    
191     <p>
192     If you want your kernel to be named something other than bzImage, be sure to
193     copy to /boot/yourname instead. Don't forget to set up grub.conf or lilo.conf
194     and run /sbin/lilo if you use LILO.
195     </p>
196    
197     </body>
198     </section>
199 peesh 1.1 </chapter>
200    
201 swift 1.8 <chapter>
202 swift 1.17 <title>Install X11-DRM and configure direct rendering</title>
203 swift 1.8 <section>
204 swift 1.17 <title>Install X11-DRM</title>
205 swift 1.8 <body>
206 peesh 1.1
207 swift 1.17 <pre caption="Installing X11-DRM">
208 cam 1.18 # <i>emerge x11-drm</i>
209 swift 1.8 </pre>
210 peesh 1.1
211 swift 1.8 </body>
212     </section>
213 swift 1.20 <section id="configure_xorg">
214 swift 1.17 <title>Configure Xorg.conf</title>
215 swift 1.8 <body>
216    
217     <p>
218 swift 1.22 Some chipsets require you to rebuild <c>xorg-x11</c> with
219     <c>USE="insecure-drivers"</c>. This applies to mach64, unichrome and savage
220     chipsets on xorg-x11-6.8.2, and to mach64 and unichrome on xorg-x11-6.8.99.x.
221     Savage users should not try xorg-x11-6.8.99.x as support for the savage there
222     is broken.
223     </p>
224    
225     <pre caption="Rebuilding xorg-x11">
226 neysx 1.28 <comment>(Add the insecure-drivers USE flag if you use one of the aforementioned chipsets)</comment>
227     # <i>echo "x11-base/xorg-x11 insecure-drivers" &gt;&gt; /etc/portage/package.use</i>
228 swift 1.22
229     # <i>emerge xorg-x11</i>
230     </pre>
231    
232     <p>
233 swift 1.17 Open <path>/etc/X11/xorg.conf</path> with your favorite text editor and edit
234 swift 1.8 it to enable DRI and GLX.
235     </p>
236 peesh 1.1
237 swift 1.17 <pre caption="xorg.conf">
238 peesh 1.1 ...
239     Section "Module"
240 swift 1.8 Load "dri"
241     Load "glx"
242     ...
243 peesh 1.1 EndSection
244     ...
245     Section "Device"
246 swift 1.8 Driver "radeon"
247     ...
248 peesh 1.1 EndSection
249     ...
250 swift 1.7 Section "dri"
251 swift 1.8 Mode 0666
252 peesh 1.1 EndSection
253 swift 1.8 </pre>
254    
255     <p>
256     If you are using a different driver, replace "radeon" with yours.
257     </p>
258    
259     </body>
260     </section>
261 fox2mike 1.27 <section>
262     <title>Changes to modules.autoload.d</title>
263     <body>
264    
265     <p>
266     You will need to add the module name that your card uses to
267     <path>/etc/modules.autoload.d/kernel-2.6</path> to ensure that the module is
268     loaded automatically when the system starts up.
269     </p>
270    
271     <pre caption="Editing /etc/modules.autoload.d/kernel-2.6">
272     <comment>(Change module name as required.)</comment>
273     intel-agp
274     </pre>
275    
276 nightmorph 1.29 <note>
277     If you compiled <c>agpgart</c> as a module, you will also need to add it to
278     <path>/etc/modules.autoload.d/kernel-2.6</path>.
279     </note>
280    
281 fox2mike 1.27 </body>
282     </section>
283 peesh 1.1 </chapter>
284    
285 swift 1.8 <chapter>
286     <title>Test 3D acceleration</title>
287     <section>
288     <title>Reboot to the new kernel</title>
289     <body>
290    
291     <p>
292 nightmorph 1.29 Reboot your computer to your new kernel and login as a normal user. It's time
293     to see if you have direct rendering and how good it is.
294 swift 1.8 </p>
295 peesh 1.1
296 swift 1.9 <pre caption="Testing rendering">
297 nightmorph 1.29 $ <i>startx</i>
298 neysx 1.21 <comment>(No need to load modules for your driver or agpgart, if you compiled agpgart as a module.)</comment>
299     <comment>(They will be loaded automatically.)</comment>
300 nightmorph 1.29 $ <i>glxinfo | grep rendering</i>
301 peesh 1.1 direct rendering: Yes
302 neysx 1.21 <comment>(If it says "No," you don't have 3D acceleration.)</comment>
303 nightmorph 1.29 $ <i>glxgears</i>
304 neysx 1.21 <comment>(Test your frames per second (FPS) at the default size. The number should be )</comment>
305     <comment>(significantly higher than before installing x11-drm. Do this while the CPU is as idle as possible.)</comment>
306 swift 1.8 </pre>
307    
308     </body>
309     </section>
310 peesh 1.1 </chapter>
311    
312 swift 1.8 <chapter>
313     <title>Using the CVS sources</title>
314     <section>
315     <body>
316    
317     <warn>
318     Don't do this if the package worked.
319     </warn>
320    
321     </body>
322     </section>
323     <section>
324     <title>Do you need the CVS?</title>
325     <body>
326    
327     <p>
328 swift 1.17 First you have to check whether the x11-drm package works. If it doesn't and
329 swift 1.8 you have checked your logs to verify it's not a configuration error, you might
330     want to consider the CVS sources. There are also daily driver snapshots
331     available if you do not wish to build the full CVS.
332     </p>
333    
334     </body>
335     </section>
336     <section>
337     <title>Do the CVS sources support your card?</title>
338     <body>
339    
340     <p>
341 neysx 1.25 Check the DRI <uri link="http://dri.freedesktop.org/wiki/Status">supported
342     cards list</uri> to see if the CVS supports your card. Even if it doesn't, but
343     it supports a similar card, try it.
344 swift 1.8 </p>
345    
346 swift 1.15 <!-- I see a couple of 8x AGP stuff on the Internet about vanilla 2.4 kernels;
347     is this now available or not? I've commented it out for the time being,
348     hoping that this doesn't affect us :)
349    
350 swift 1.8 <warn>
351     "Linux 2.4 doesn't support agp 8x, so I had to go find a backport. The backport
352     works .... it doesn't patch quite properly, and it requires 2.4.21 (I've only
353     gotten it to work with vanilla, straight from the tarball (not ebuild)). First
354     go get the 2.4.20-2.4.21 patch from kernel.org .... (then get the patch,) It
355 swift 1.15 was on a mailing list somewhere. It doesn't patch cleanly - - one file fails,
356 swift 1.8 the pci_ids.h file, but if you actually read the file and the reject list, it's
357     very easy to fix. But it does load, and it gives me 1600x1200 with video
358     (although a bit slow b/c of lack of dga) with xfree-drm." (SanityInAnarchy on
359     #gentoo)
360     </warn>
361    
362     <impo>
363     The patch is a little tricky to work with but <uri
364     link="http://www.ussg.iu.edu/hypermail/linux/kernel/0302.2/att-1618/01-agp3.diff.bz2">here's
365     the link</uri>. If you can disable 8X AGP in your BIOS, change it to 4X and you
366     may not need the patch.
367     </impo>
368 swift 1.15 -->
369 swift 1.8
370     </body>
371     </section>
372     <section>
373 swift 1.15 <title>Follow the CVS Instructions</title>
374 swift 1.8 <body>
375    
376     <p>
377 swift 1.15 The DRI project has a document about CVS compiling themselves. Please read <uri
378 neysx 1.25 link="http://dri.freedesktop.org/wiki/Building">the document</uri> and follow
379     the instructions up to the <e>Installing for X.org</e> part.
380 swift 1.8 </p>
381    
382     </body>
383     </section>
384     <section>
385     <title>Install the CVS</title>
386     <body>
387    
388     <p>
389     Verify that the DRI kernel module(s) for your system were built:
390     </p>
391 peesh 1.1
392 swift 1.9 <pre caption="Verification">
393 peesh 1.1 # <i>cd ~/DRI-CVS/build/xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel; ls</i>
394 swift 1.8 </pre>
395    
396     <p>
397     For the 3dfx Voodoo, you should see <path>tdfx.o</path>. For the Matrox
398     G200/G400, you should see <path>mga.o</path>. For the ATI Rage 128, you should
399     see <path>r128.o</path>. For the ATI Radeon, you should see
400     <path>radeon.o</path>. For the Intel i810, you should see <path>i810.o</path>.
401     If the DRI kernel module(s) failed to build, you should verify that you're
402     using the right version of the Linux kernel. The most recent kernels are not
403     always supported.
404     </p>
405    
406     <p>
407 fox2mike 1.23 Install over your X.org installation. You may wish to back up xorg-x11.
408 swift 1.8 </p>
409    
410 swift 1.17 <pre caption="Backing up Xorg">
411     # <i>quickpkg xorg-x11</i>
412 neysx 1.21 <comment>(This backs up your Xorg-X11 package.)</comment>
413 swift 1.7 # <i>make install</i>
414 swift 1.8 </pre>
415    
416     <p>
417 swift 1.17 Follow the "Configure Xorg" section above.
418 swift 1.8 </p>
419    
420     <p>
421     To load the appropriate DRM module in your running kernel, copy the kernel
422     module to <path>/lib/modules/`uname -r`/kernel/drivers/char/drm/</path> then
423     run <c>modules-update</c> and restart your X server. If you're not running the
424     kernel you'll be using it in, instead of <c>`uname -r`,</c> use that kernel's
425     name.
426     </p>
427    
428     <warn>
429     Make sure you first unload any older DRI kernel modules that might be already
430     loaded. Note that some DRM modules require that the agpgart module be loaded
431     first.
432     </warn>
433    
434     </body>
435     </section>
436 peesh 1.1 </chapter>
437    
438 swift 1.8 <chapter>
439     <title>Tweak your performance</title>
440     <section>
441     <title>Get the most out of direct rendering</title>
442     <body>
443    
444     <p>
445 nightmorph 1.30 A few options may increase performance by up to 30 percent (or more) over the
446     default. Set them in <path>/etc/X11/xorg.conf</path>. However, you will first
447     need to check that your motherboard and video card support these options.
448     </p>
449    
450     <p>
451     First, let's see if your video card can support fast writes. We'll do this by
452     closely inspecting the output from <c>lspci</c>. Specifically, we are looking
453     at the "VGA compatible controller" information.
454     </p>
455    
456     <pre caption="Video card check">
457     # <i>lspci -vv</i>
458     01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY (prog-if 00 [VGA])
459     . . .
460     Capabilities: [58] AGP version 2.0
461     Status: RQ=48 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4
462     </pre>
463    
464     <p>
465     While quite a lot of information is produced, we are looking for <b>FW</b> in
466     the "Status" subsection of the AGP "Capabilities" section. If <b>FW+</b> is
467     present in the "Status" line, it means the card supports fast writes. We can
468     now check if the motherboard supports fast writes.
469     </p>
470    
471     <impo>
472     If you do not see <b>FW+</b>, but instead see <b>FW-</b>, you cannot enable
473     fast writes in <path>xorg.conf</path>. Your card does not support fast writes.
474     </impo>
475    
476     <p>
477     Now let's make sure the motherboard supports fast writes as well. This time,
478     look at the "Host bridge" section of your <c>lspci</c> output.
479     </p>
480    
481     <pre caption="Motherboard check">
482     # <i>lspci -vv</i>
483     00:00.0 Host bridge: Intel Corporation 82830 830 Chipset Host Bridge (rev 02)
484     . . .
485     Capabilities: [a0] AGP version 2.0
486     Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4
487     </pre>
488    
489     <p>
490     Again, examine the "Status" subsection of your AGP "Capabilities" section. Look
491     for <b>FW</b>. If you see <b>FW+</b>, your motherboard supports fast writes.
492     </p>
493    
494     <impo>
495     Remember, both your video card information and your motherboard information
496     must show the same <b>FW</b> capability. If either device shows <b>FW-</b> in
497     "Status", you cannot enable fast writes in <path>xorg.conf</path>.
498     </impo>
499    
500     <p>
501     Assuming that all has gone well and both your motherboard and video card
502     support fast writes, let's enable this option in
503     <path>/etc/X11/xorg.conf</path> and get the best performance out of your
504     hardware.
505 swift 1.8 </p>
506 peesh 1.1
507 swift 1.17 <pre caption="xorg.conf">
508 peesh 1.1 Section "Device"
509 swift 1.8 Option "AGPMode" "4"
510 neysx 1.21 <comment>(This increased FPS from 609 to 618.)</comment>
511 swift 1.8 Option "AGPFastWrite" "True"
512 neysx 1.21 <comment>(This had no measurable effect, but it may increase instability of your computer.)</comment>
513     <comment>(You may also need to set it in your BIOS.)</comment>
514 swift 1.8 Option "EnablePageFlip" "True"
515 neysx 1.21 <comment>(This improved FPS from 618 to 702. It also is "risky" but few people have reported problems.)</comment>
516 swift 1.8 ...
517 peesh 1.1 EndSection
518 swift 1.8 </pre>
519    
520 nightmorph 1.29 <warn>
521     Enabling <c>AGPFastWrite</c> on a VIA chipset will very likely cause your
522     machine to lock up. VIA chipsets do not play nicely with fast writes, so use
523     this setting at your own risk.
524     </warn>
525    
526     <note>
527     Remember, if you want fast writes to work properly, you will have to first
528     enable the appropriate option in your BIOS.
529     </note>
530    
531 swift 1.8 <p>
532 neysx 1.25 If you want to set even more features, check out the <uri
533     link="http://dri.freedesktop.org/wiki/FeatureMatrix">feature matrix</uri> on
534     the DRI web site or the <uri
535     link="http://dri.sourceforge.net/doc/dri_driver_features.phtml">features
536     listing</uri> on Sourceforge.
537 swift 1.8 </p>
538    
539     </body>
540     </section>
541 peesh 1.1 </chapter>
542    
543     <chapter>
544 swift 1.8 <title>Troubleshooting</title>
545     <section>
546     <title>It doesn't work. I just recompiled my kernel or switched to a new one.</title>
547     <body>
548    
549     <p>
550 fox2mike 1.23 Whenever you rebuild your kernel or switch to another kernel, you'll have to
551     rebuild the kernel module. Note that you don't need to remerge xorg-x11, but
552     you will need to remerge x11-drm.
553 swift 1.8 </p>
554    
555     </body>
556     </section>
557    
558     <section>
559     <title>It doesn't work. I don't have rendering, and I can't tell why.</title>
560     <body>
561    
562     <p>
563     Try <c>insmod radeon</c> before you start the X server. Also, try building
564     agpgart into the kernel instead of as a module.
565     </p>
566    
567     </body>
568     </section>
569     <section>
570 cam 1.13 <title>When I startx, I get this error: "[drm] failed to load kernel module agpgart"</title>
571 swift 1.8 <body>
572    
573     <p>
574     That's because you compiled agpgart into the kernel instead of as a module.
575     Ignore it unless you're having problems.
576     </p>
577    
578     </body>
579     </section>
580     <section>
581 swift 1.17 <title>Direct rendering doesn't work, and in /var/log/Xorg.0.log I have an error about driver version too low.</title>
582 swift 1.8 <body>
583    
584     <p>
585 swift 1.17 You aren't using the x11-drm driver. Check if you compiled DRM and the driver
586 swift 1.8 into the kernel; you shouldn't have.
587     </p>
588    
589     </body>
590     </section>
591     <section>
592     <title>I have a Radeon, and I want TV-Out.</title>
593     <body>
594    
595     <p>
596     Check out ati-gatos drivers. <c>emerge -s gatos</c>.
597     </p>
598    
599     </body>
600     </section>
601     <section>
602     <title>It doesn't work. My card is so incredibly new and cool that it isn't supported at all.</title>
603     <body>
604    
605     <p>
606     Try out the binary drivers. For ati-drivers, a listing is at
607 neysx 1.24 <uri>http://www.schneider-digital.de/html/download_ati.php</uri>. If those
608 swift 1.8 don't support it, use fbdev. It's slow, but it works.
609     </p>
610    
611     </body>
612     </section>
613     <section>
614     <title>I have a PCI card and it doesn't work. Help!</title>
615     <body>
616    
617     <p>
618     In section "Device" enable ForcePCIMode.
619     </p>
620    
621 swift 1.9 <pre caption="Enabling ForcePCIMode">
622 swift 1.8 Option "ForcePCIMode" "True"
623     </pre>
624    
625     </body>
626     </section>
627 peesh 1.1 </chapter>
628    
629 swift 1.8 <chapter>
630     <title>Acknowledgments</title>
631     <section>
632     <body>
633    
634     <ol>
635     <li>
636     Christopher Webber for suggesting a troubleshooting question about changing
637     or recompiling kernels
638     </li>
639     <li>
640     Steve, for suggesting consistency between the cases of dri and DRI in
641     XF86Config
642     </li>
643     </ol>
644 peesh 1.1
645 swift 1.8 </body>
646     </section>
647 swift 1.7 </chapter>
648    
649 swift 1.8 <chapter>
650     <title>References</title>
651     <section>
652     <body>
653    
654     <ol>
655 neysx 1.25 <li><uri>http://forums.gentoo.org/viewtopic.php?t=46681</uri></li>
656     <li><uri>http://forums.gentoo.org/viewtopic.php?t=29264</uri></li>
657     <li><uri>http://dri.freedesktop.org/</uri></li>
658     <li><uri>http://www.retinalburn.net/linux/dri_status.html</uri></li>
659 swift 1.8 </ol>
660 swift 1.7
661 swift 1.8 </body>
662     </section>
663 peesh 1.1 </chapter>
664     </guide>

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