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<?xml version='1.0' encoding="UTF-8"?>
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<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/nvidia-guide.xml,v 1.34 2006/11/28 20:01:21 nightmorph Exp $ -->
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<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
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<guide link="/doc/en/nvidia-guide.xml">
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<title>Gentoo Linux nVidia Guide</title>
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<author title="Author">
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<mail link="swift@gentoo.org">Sven Vermeulen</mail>
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</author>
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<author title="Editor">
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<mail link="curtis119@gentoo.org">M Curtis Napier</mail>
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</author>
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<author title="Editor">
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<mail link="nightmorph@gentoo.org">Joshua Saddler</mail>
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</author>
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<author title="Editor">
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<mail link="wolf31o2@gentoo.org">Chris Gianelloni</mail>
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</author>
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<abstract>
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Many Gentooists have an nVidia chipset on their system. nVidia provides specific
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Linux drivers to boost the performance of your card. This guide informs you how
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to install and configure these drivers.
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</abstract>
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<!-- The content of this document is licensed under the CC-BY-SA license -->
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<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
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<license/>
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<version>1.28</version>
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<date>2006-10-23</date>
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<chapter>
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<title>Introduction</title>
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<section>
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<body>
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<p>
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nVidia release their own Linux drivers which provide good performance and full
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3D acceleration. There are two drivers in Portage. <c>nvidia-drivers</c> is for
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newer nVidia graphics cards, while <c>nvidia-legacy-drivers</c> supports older
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cards.
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</p>
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<note>
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Previously, Gentoo provided separate ebuilds for the nVidia kernel module
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(<c>nvidia-kernel</c>) and the X11 GLX libraries (<c>nvidia-glx</c>). These
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ebuilds have since been removed from the Portage tree in favor of
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<c>nvidia-drivers</c> and <c>nvidia-legacy-drivers</c>. If you use
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<c>nvidia-kernel</c> and <c>nvidia-glx</c>, then you should migrate to the
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newer packages.
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</note>
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</body>
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</section>
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</chapter>
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<chapter>
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<title>Configuring your Card</title>
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<section>
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<title>Kernel Configuration</title>
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<body>
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<p>
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As mentioned above, the nVidia kernel driver installs and runs against your
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current kernel. It builds as a module, so it makes sense that your kernel must
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support the loading of kernel modules. If you used <c>genkernel</c> to
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configure the kernel for you then you're all set. If not, double check your
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kernel configuration so that this support is enabled:
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</p>
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<pre caption="Enabling the Loading of Kernel Modules">
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Loadable module support --->
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[*] Enable loadable module support
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</pre>
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<p>
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You also need to enable <e>Memory Type Range Register</e> in your kernel:
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</p>
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<pre caption="Enabling MTRR">
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Processor and Features --->
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[*] MTRR (Memory Type Range Register) support
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</pre>
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<p> Also, if you have an AGP graphics card, you can optionally enable
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<c>agpgart</c> support to your kernel, either compiled in or as a module. If
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you do not use the in-kernel agpgart, then the drivers will use their own
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<c>agpgart</c> implementation, called <c>NvAGP</c>. On certain systems, this
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performs better than the in-kernel agpgart, and on others, it performs worse.
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You will need to evaluate this on your own system to get the best performance.
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If you are unsure what to do, use the in-kernel agpgart:
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</p>
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<pre caption="Enabling agpgart">
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Device Drivers --->
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Character devices --->
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<*> /dev/agpgart (AGP Support)
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</pre>
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</body>
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</section>
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<section>
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<title>Arch-specific notes</title>
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<body>
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<impo>
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For x86 and AMD64 processors, the in-kernel driver conflicts with the binary
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driver provided by nVidia. If you will be compiling your kernel for these CPUs,
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you must completely remove support for the in-kernel driver as shown:
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</impo>
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<pre caption="Remove the in-kernel driver">
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Device Drivers --->
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Graphics Support --->
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< > nVidia Framebuffer Support
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< > nVidia Riva support
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</pre>
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<p>
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A good framebuffer alternative is <c>VESA</c>:
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</p>
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<pre caption="Enable VESA support">
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Device Drivers --->
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Graphics Support --->
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<*> VESA VGA graphics support
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</pre>
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<p>
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Then, under "VESA driver type" select either <c>vesafb</c> or
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<c>vesafb-tng</c>. If you are using an AMD64 processor, you should select
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<c>vesafb</c> rather than <c>vesafb-tng</c>:
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</p>
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<pre caption="Select framebuffer type">
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(X) vesafb
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( ) vesafb-tng
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</pre>
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<p>
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For more information, you can read up
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<path>/usr/src/linux/Documentation/fb/vesafb.txt</path> if you are using
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<c>vesafb</c> or look for your framebuffer documentation under
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<path>/usr/src/linux/Documentation/fb/</path>.
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</p>
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</body>
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</section>
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<section>
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<title>Continuing with Kernel Configuration</title>
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<body>
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<p>
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The <c>nvidia-drivers</c> and <c>nvidia-legacy-drivers</c> ebuilds
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automatically discover your kernel version based on the
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<path>/usr/src/linux</path> symlink. Please ensure that you have this symlink
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pointing to the correct sources and that your kernel is correctly configured.
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Please refer to the Configuring the Kernel section of the <uri
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link="/doc/en/handbook/">Installation Handbook</uri> for details on configuring
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your kernel.
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</p>
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<p>
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If you are using gentoo-sources-2.6.11-r6, your <path>/usr/src</path> directory
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might look something like this:
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</p>
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<pre caption="Check your /usr/src/linux symlink">
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# <i>cd /usr/src</i>
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# <i>ls -l</i>
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<comment>(Check that linux points to the right directory)</comment>
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lrwxrwxrwx 1 root root 22 Apr 23 18:33 linux -> linux-2.6.11-gentoo-r6
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drwxr-xr-x 4 root root 120 Apr 8 18:56 linux-2.4.26-gentoo-r4
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drwxr-xr-x 18 root root 664 Dec 31 16:09 linux-2.6.10
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drwxr-xr-x 18 root root 632 Mar 3 12:27 linux-2.6.11
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drwxr-xr-x 19 root root 4096 Mar 16 22:00 linux-2.6.11-gentoo-r6
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</pre>
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<p>
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In the above output, you'll notice that the <c>linux</c> symlink is pointing
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to the <c>linux-2.6.11-gentoo-r6</c> kernel.
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</p>
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<p>
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If the symlink is not pointing to the correct sources, you must update the link
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like this:
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</p>
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<pre caption="Create/Update /usr/src/linux symlink">
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# <i>cd /usr/src</i>
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# <i>ln -snf linux-2.6.11-gentoo-r6 linux</i>
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</pre>
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</body>
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</section>
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<section>
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<title>Optional: Check for Legacy Card Support</title>
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<body>
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<note>
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Unfortunately, certain legacy video cards are not supported by the newer
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versions of <c>nvidia-drivers</c>. nVidia provides a <uri
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link="http://www.nvidia.com/object/IO_18897.html">list of supported
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cards</uri>. Please check the list before installing the drivers.
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</note>
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<p>
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The following is a list of <b>unsupported</b> legacy video cards:
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</p>
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<pre caption="Unsupported cards">
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TNT2
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TNT2 Pro
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TNT2 Ultra
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TNT2 Model 64 (M64)
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TNT2 Model 64 (M64) Pro
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Vanta
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Vanta LT
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GeForce 256
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GeForce DDR
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GeForce2 GTS
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GeForce2 Pro
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GeForce2 Ti
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GeForce2 Ultra
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GeForce2 MX Integrated graphics
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Quadro
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Quadro2 Pro
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Quadro2 EX
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</pre>
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<p>
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If your card is listed in the legacy list, then you will be required to install
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the <c>nvidia-legacy-drivers</c> package to get 3D support.
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</p>
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</body>
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</section>
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<section>
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<title>Installing the Appropriate Drivers</title>
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<body>
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<p>
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Now it's time to install the drivers.
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</p>
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<pre caption="Installing the nVidia drivers">
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<comment>(If you have a card not listed in the legacy list above)</comment>
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# <i>emerge nvidia-drivers</i>
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<comment>(If your card is listed in the legacy list)</comment>
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# <i>emerge nvidia-legacy-drivers</i>
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</pre>
|
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<impo>
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Every time you <uri link="/doc/en/kernel-upgrade.xml">compile a new
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kernel</uri> or recompile the current one, you will need to run <c>emerge
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nvidia-drivers</c> or <c>emerge nvidia-legacy-drivers</c> to reinstall the
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nVidia modules.
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</impo>
|
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<p>
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Once the installation has finished, run <c>modprobe nvidia</c> to load the
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kernel module into memory. If this is an upgrade, you should remove the
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previous module first.
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</p>
|
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<pre caption="Loading the kernel module">
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# <i>lsmod | grep nvidia && rmmod nvidia</i>
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# <i>modprobe nvidia</i>
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</pre>
|
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<p>
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To prevent you having to manually load the module on every bootup, you probably
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want to have this done automatically each time you boot your system, so edit
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<path>/etc/modules.autoload.d/kernel-2.6</path> (or <path>kernel-2.4</path>,
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depending on which kernel version you use) and add <c>nvidia</c> to it. Don't
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forget to run <c>modules-update</c> afterwards.
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</p>
|
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| 281 |
<impo>
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| 282 |
If you compiled <c>agpgart</c> as a module, you will need to add it to
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<path>/etc/modules.autoload.d/kernel-2.6</path> (or <path>kernel-2.4</path>
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depending on your kernel version).
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</impo>
|
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<pre caption="Running modules-update">
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# <i>modules-update</i>
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</pre>
|
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</body>
|
| 292 |
</section>
|
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<section>
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| 294 |
<title>Configuring the X Server</title>
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<body>
|
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|
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<p>
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Once the appropriate drivers are installed you need to configure your X Server
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to use the <c>nvidia</c> driver instead of the default <c>nv</c> driver.
|
| 300 |
</p>
|
| 301 |
|
| 302 |
<p>
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Open <path>/etc/X11/xorg.conf</path> with your favorite editor (such as
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<c>nano</c> or <c>vim</c>) and go to the <c>Device</c> section. In that
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section, change the <c>Driver</c> line:
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</p>
|
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<pre caption="Changing nv to nvidia in the X Server configuration">
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Section "Device"
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Identifier "nVidia Inc. GeForce2"
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<i>Driver "nvidia"</i>
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VideoRam 65536
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| 313 |
EndSection
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| 314 |
</pre>
|
| 315 |
|
| 316 |
<p>
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Then go to the <c>Module</c> section and make sure the <c>glx</c> module gets
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loaded while the <c>dri</c> module doesn't:
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| 319 |
</p>
|
| 320 |
|
| 321 |
<pre caption="Updating the Module section">
|
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Section "Module"
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<comment>(...)</comment>
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<i># Load "dri"
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Load "glx"</i>
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| 326 |
<comment>(...)</comment>
|
| 327 |
EndSection
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| 328 |
</pre>
|
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|
| 330 |
<p>
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| 331 |
Next, in section <c>Screen</c>, make sure that either the <c>DefaultDepth</c>
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directive is set to 16 or 24, or that you only have <c>Display</c> subsections
|
| 333 |
with <c>Depth</c> settings of 16 or 24. Without it, the nVidia GLX extensions
|
| 334 |
will not start.
|
| 335 |
</p>
|
| 336 |
|
| 337 |
<pre caption="Updating the Screen section">
|
| 338 |
Section "Screen"
|
| 339 |
<comment>(...)</comment>
|
| 340 |
<i>DefaultDepth 16</i>
|
| 341 |
Subsection "Display"
|
| 342 |
<comment>(...)</comment>
|
| 343 |
EndSection
|
| 344 |
</pre>
|
| 345 |
|
| 346 |
<p>
|
| 347 |
Run <c>eselect</c> so that the X Server uses the nVidia GLX libraries:
|
| 348 |
</p>
|
| 349 |
|
| 350 |
<pre caption="Running eselect">
|
| 351 |
# <i>eselect opengl set nvidia</i>
|
| 352 |
</pre>
|
| 353 |
|
| 354 |
</body>
|
| 355 |
</section>
|
| 356 |
<section>
|
| 357 |
<title>Adding your Users to the video Group</title>
|
| 358 |
<body>
|
| 359 |
|
| 360 |
<p>
|
| 361 |
You have to add your user to the <c>video</c> group so he has access to the
|
| 362 |
nvidia device files:
|
| 363 |
</p>
|
| 364 |
|
| 365 |
<pre caption="Adding your user to the video group">
|
| 366 |
# <i>gpasswd -a youruser video</i>
|
| 367 |
</pre>
|
| 368 |
|
| 369 |
<p>
|
| 370 |
This might not be totally necessary if you aren't using <c>udev</c> but it
|
| 371 |
doesn't hurt either and makes your system future-proof.
|
| 372 |
</p>
|
| 373 |
|
| 374 |
</body>
|
| 375 |
</section>
|
| 376 |
<section>
|
| 377 |
<title>Testing your Card</title>
|
| 378 |
<body>
|
| 379 |
|
| 380 |
<p>
|
| 381 |
To test your nVidia card, fire up X and run the <c>glxinfo | grep direct</c>
|
| 382 |
command. It should say that direct rendering is activated:
|
| 383 |
</p>
|
| 384 |
|
| 385 |
<pre caption="Checking the direct rendering status">
|
| 386 |
$ <i>glxinfo | grep direct</i>
|
| 387 |
direct rendering: Yes
|
| 388 |
</pre>
|
| 389 |
|
| 390 |
<p>
|
| 391 |
To monitor your FPS, run <c>glxgears</c>.
|
| 392 |
</p>
|
| 393 |
|
| 394 |
</body>
|
| 395 |
</section>
|
| 396 |
<section>
|
| 397 |
<title>Enabling nvidia Support</title>
|
| 398 |
<body>
|
| 399 |
|
| 400 |
<p>
|
| 401 |
Some tools, such as <c>mplayer</c> and <c>xine-lib</c>, use a local USE flag
|
| 402 |
called "nvidia" which enables XvMCNVIDIA support, useful when watching high
|
| 403 |
resolution movies. Add in "nvidia" in your USE variable in
|
| 404 |
<path>/etc/make.conf</path> or add it as USE flag to <c>media-video/mplayer</c>
|
| 405 |
and/or <c>media-libs/xine-lib</c> in <path>/etc/portage/package.use</path>.
|
| 406 |
</p>
|
| 407 |
|
| 408 |
<p>
|
| 409 |
Then, run <c>emerge -uD --newuse world</c> to rebuild the applications that
|
| 410 |
benefit from the USE flag change.
|
| 411 |
</p>
|
| 412 |
|
| 413 |
</body>
|
| 414 |
</section>
|
| 415 |
<section>
|
| 416 |
<title>Using NVidia Settings Tool</title>
|
| 417 |
<body>
|
| 418 |
|
| 419 |
<p>
|
| 420 |
Since nVidia released version 1.0.6106 it also provides you with a settings
|
| 421 |
tool. This tool allows you to change graphical settings without restarting the
|
| 422 |
X server and is available through Portage as
|
| 423 |
<c>media-video/nvidia-settings</c>.
|
| 424 |
</p>
|
| 425 |
|
| 426 |
</body>
|
| 427 |
</section>
|
| 428 |
</chapter>
|
| 429 |
|
| 430 |
<chapter>
|
| 431 |
<title>Troubleshooting</title>
|
| 432 |
<section>
|
| 433 |
<title>Getting 2D to work on machines with 4Gb or more memory</title>
|
| 434 |
<body>
|
| 435 |
|
| 436 |
<p>
|
| 437 |
If you are having troubles with the nVidia 2D acceleration it is likely that
|
| 438 |
you are unable to set up a write-combining range with MTRR. To verify, check
|
| 439 |
the contents of <path>/proc/mtrr</path>:
|
| 440 |
</p>
|
| 441 |
|
| 442 |
<pre caption="Checking if you have write-combining enabled">
|
| 443 |
# <i>cat /proc/mtrr</i>
|
| 444 |
</pre>
|
| 445 |
|
| 446 |
<p>
|
| 447 |
Every line should contain "write-back" or "write-combining". If you see a line
|
| 448 |
with "uncachable" in it you will need to change a BIOS setting to fix this.
|
| 449 |
</p>
|
| 450 |
|
| 451 |
<p>
|
| 452 |
Reboot and enter the BIOS, then find the MTRR settings (probably under "CPU
|
| 453 |
Settings"). Change the setting from "continuous" to "discrete" and boot back
|
| 454 |
into Linux. You will now find out that there is no "uncachable" entry anymore
|
| 455 |
and 2D acceleration now works without any glitches.
|
| 456 |
</p>
|
| 457 |
|
| 458 |
</body>
|
| 459 |
</section>
|
| 460 |
<section>
|
| 461 |
<title>
|
| 462 |
When I attempt to load the kernel module I receive a "no such device"
|
| 463 |
</title>
|
| 464 |
<body>
|
| 465 |
|
| 466 |
<p>
|
| 467 |
This usually occurs when you don't have a matching video card. Make sure that
|
| 468 |
you have an nVidia-powered graphical card (you can double-check this using
|
| 469 |
<c>lspci</c>).
|
| 470 |
</p>
|
| 471 |
|
| 472 |
<p>
|
| 473 |
If you are confident that you have an nVidia card, check your BIOS and see if
|
| 474 |
the directive <e>Assign IRQ to VGA</e> is set.
|
| 475 |
</p>
|
| 476 |
|
| 477 |
</body>
|
| 478 |
</section>
|
| 479 |
</chapter>
|
| 480 |
|
| 481 |
<chapter>
|
| 482 |
<title>Expert Configuration</title>
|
| 483 |
<section>
|
| 484 |
<title>Documentation</title>
|
| 485 |
<body>
|
| 486 |
|
| 487 |
<p>
|
| 488 |
The nVidia driver package also comes with comprehensive documentation. This is
|
| 489 |
installed into <c>/usr/share/doc</c> and can be viewed with the following
|
| 490 |
command:
|
| 491 |
</p>
|
| 492 |
|
| 493 |
<pre caption="Viewing the NVIDIA documentation">
|
| 494 |
<comment>(for nvidia-drivers)</comment>
|
| 495 |
$ <i>less /usr/share/doc/nvidia-drivers-*/README.gz</i>
|
| 496 |
<comment>(for nvidia-legacy-drivers)</comment>
|
| 497 |
$ <i>less /usr/share/doc/nvidia-legacy-drivers-*/README.gz</i>
|
| 498 |
</pre>
|
| 499 |
|
| 500 |
</body>
|
| 501 |
</section>
|
| 502 |
<section>
|
| 503 |
<title>Kernel module parameters</title>
|
| 504 |
<body>
|
| 505 |
|
| 506 |
<p>
|
| 507 |
The <c>nvidia</c> kernel module accepts a number of parameters (options) which
|
| 508 |
you can use to tweak the behaviour of the driver. Most of these are mentioned in
|
| 509 |
the documentation. To add or change the values of these parameters, edit the
|
| 510 |
file <c>/etc/modules.d/nvidia</c>. Remember to run <c>modules-update</c> after
|
| 511 |
modifying this file, and bear in mind that you will need to reload the
|
| 512 |
<c>nvidia</c> module before the new settings take effect.
|
| 513 |
</p>
|
| 514 |
|
| 515 |
<pre caption="Adjusting nvidia options">
|
| 516 |
<comment>(Edit /etc/modules.d/nvidia in your favourite editor)</comment>
|
| 517 |
# <i>nano -w /etc/modules.d/nvidia</i>
|
| 518 |
<comment>(Update module information)</comment>
|
| 519 |
# <i>modules-update</i>
|
| 520 |
<comment>(Unload the nvidia module...)</comment>
|
| 521 |
# <i>modprobe -r nvidia</i>
|
| 522 |
<comment>(...and load it once again)</comment>
|
| 523 |
# <i>modprobe nvidia</i>
|
| 524 |
</pre>
|
| 525 |
|
| 526 |
</body>
|
| 527 |
</section>
|
| 528 |
<section>
|
| 529 |
<title>Advanced X configuration</title>
|
| 530 |
<body>
|
| 531 |
|
| 532 |
<p>
|
| 533 |
The GLX layer also has a plethora of options which can be configured. These
|
| 534 |
control the configuration of TV out, dual displays, monitor frequency detection,
|
| 535 |
etc. Again, all of the available options are detailed in the documentation.
|
| 536 |
</p>
|
| 537 |
|
| 538 |
<p>
|
| 539 |
If you wish to use any of these options, you need to list them in the relevant
|
| 540 |
Device section of your X config file (usually <c>/etc/X11/xorg.conf</c>). For
|
| 541 |
example, suppose I wanted to disable the splash logo:
|
| 542 |
</p>
|
| 543 |
|
| 544 |
<pre caption="Advanced nvidia configuration in the X configuration">
|
| 545 |
Section "Device"
|
| 546 |
Identifier "nVidia Inc. GeForce2"
|
| 547 |
Driver "nvidia"
|
| 548 |
<i>Option "NoLogo" "true"</i>
|
| 549 |
VideoRam 65536
|
| 550 |
EndSection
|
| 551 |
</pre>
|
| 552 |
|
| 553 |
</body>
|
| 554 |
</section>
|
| 555 |
</chapter>
|
| 556 |
|
| 557 |
</guide>
|
Parent Directory
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