/[gentoo]/xml/htdocs/doc/en/nvidia-guide.xml
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1<?xml version='1.0' encoding="UTF-8"?> 1<?xml version='1.0' encoding="UTF-8"?>
2<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/nvidia-guide.xml,v 1.5 2004/08/19 08:10:43 swift Exp $ --> 2<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/nvidia-guide.xml,v 1.6 2004/08/29 12:05:10 swift Exp $ -->
3<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> 3<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
4 4
5<guide link="/doc/en/nvidia-guide.xml"> 5<guide link="/doc/en/nvidia-guide.xml">
6<title>Gentoo Linux nVidia Guide</title> 6<title>Gentoo Linux nVidia Guide</title>
7 7
15to install and configure these drivers. 15to install and configure these drivers.
16</abstract> 16</abstract>
17 17
18<license/> 18<license/>
19 19
20<version>1.3</version> 20<version>1.4</version>
21<date>August 19, 2004</date> 21<date>August 29, 2004</date>
22 22
23<chapter> 23<chapter>
24<title>Configuring your Card</title> 24<title>Configuring your Card</title>
25<section> 25<section>
26<title>Installing the Appropriate Drivers</title> 26<title>Installing the Appropriate Drivers</title>
147</p> 147</p>
148 148
149</body> 149</body>
150</section> 150</section>
151</chapter> 151</chapter>
152
153<chapter>
154<title>Troubleshooting</title>
155<section>
156<title>Getting 2D to work on machines with 4Gb or more memory</title>
157<body>
158
159<p>
160If you are having troubles with the nVidia 2D acceleration it is likely that you
161are unable to set up a write-combining range with MTRR. To verify, check the
162contents of <path>/proc/mtrr</path>:
163</p>
164
165<pre caption="Checking if you have write-combining enabled">
166# <i>cat /proc/mtrr</i>
167</pre>
168
169<p>
170Every line should contain "write-back" or "write-combining". If you see a line
171with "uncachable" in it you will need to change a BIOS setting to fix this.
172</p>
173
174<p>
175Reboot and enter the BIOS, then find the MTRR settings (probably under "CPU
176Settings"). Change the setting from "continuous" to "discrete" and boot back
177into Linux. You will now find out that there is no "uncachable" entry anymore
178and 2D acceleration now works without any glitches.
179</p>
180
181</body>
182</section>
183</chapter>
184
152</guide> 185</guide>

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