<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta name="generator" content= "HTML Tidy for Linux (vers 1 September 2005), see www.w3.org"> <meta http-equiv="Content-Type" content= "text/html; charset=us-ascii"> <title>Chapter 21. Using the Proc Filesystem Interface</title> <meta name="generator" content="DocBook XSL Stylesheets V1.68.1"> <link rel="start" href="index.html" title= "NVIDIA Accelerated Linux Graphics Driver README and Installation Guide"> <link rel="up" href="part-01.html" title= "Part I. Installation and Configuration Instructions"> <link rel="prev" href="chapter-20.html" title= "Chapter 20. Configuring Flipping and UBB"> <link rel="next" href="chapter-22.html" title= "Chapter 22. Configuring Power Management Support"> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Chapter 21. Using the Proc Filesystem Interface</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href= "chapter-20.html">Prev</a> </td> <th width="60%" align="center">Part I. Installation and Configuration Instructions</th> <td width="20%" align="right"> <a accesskey="n" href= "chapter-22.html">Next</a></td> </tr> </table> <hr></div> <div class="chapter" lang="en"> <div class="titlepage"> <div> <div> <h2 class="title"><a name="procinterface" id= "procinterface"></a>Chapter 21. Using the Proc Filesystem Interface</h2> </div> </div> </div> <p>You can use the /proc filesystem interface to obtain run-time information about the driver, any installed NVIDIA graphics cards, and the AGP status.</p> <div class="variablelist"> <p class="title"><b>This information is contained in several files in /proc/driver/nvidia</b></p> <dl> <dt><span class="term">/proc/driver/nvidia/version</span></dt> <dd> <p>Lists the installed driver revision and the version of the GNU C compiler used to build the Linux kernel module.</p> </dd> <dt><span class="term">/proc/driver/nvidia/warnings</span></dt> <dd> <p>The NVIDIA graphics driver tries to detect potential problems with the host system's kernel and warns about them using the kernel's printk() mechanism, typically logged by the system to <code class="filename">/var/log/messages</code>.</p> <p>Important NVIDIA warning messages are also logged to dedicated text files in this /proc directory.</p> </dd> <dt><span class="term">/proc/driver/nvidia/cards/0...3</span></dt> <dd> <p>Provide information about each of the installed NVIDIA graphics adapters (model name, IRQ, BIOS version, Bus Type). Note that the BIOS version is only available while X is running.</p> </dd> <dt><span class="term">/proc/driver/nvidia/agp/card</span></dt> <dd> <p>Information about the installed AGP card's AGP capabilities.</p> </dd> <dt><span class= "term">/proc/driver/nvidia/agp/host-bridge</span></dt> <dd> <p>Information about the host bridge (model and AGP capabilities).</p> </dd> <dt><span class="term">/proc/driver/nvidia/agp/status</span></dt> <dd> <p>The current AGP status. If AGP support has been enabled on your system, the AGP driver being used, the AGP rate, and information about the status of AGP Fast Writes and Side Band Addressing is shown.</p> <p>The AGP driver is either NVIDIA (NVIDIA built-in AGP driver) or AGPGART (the Linux kernel's agpgart.o driver). If you see "inactive" next to AGPGART, then this means that the AGP chipset was programmed by AGPGART, but is not currently in use.</p> <p>SBA and Fast Writes indicate whether either one of these features is currently in use. Note that several factors determine whether support for either will be enabled. Even if both the AGP card and the host bridge support them, the driver may decide not to use these features in favor of system stability. This is particularly true of AGP Fast Writes.</p> </dd> </dl> </div> <p></p> </div> <div class="navfooter"> <hr> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href= "chapter-20.html">Prev</a> </td> <td width="20%" align="center"><a accesskey="u" href= "part-01.html">Up</a></td> <td width="40%" align="right"> <a accesskey="n" href= "chapter-22.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top"> Chapter 20. Configuring Flipping and UBB </td> <td width="20%" align="center"><a accesskey="h" href= "index.html">Home</a></td> <td width="40%" align="right" valign="top"> Chapter 22. Configuring Power Management Support</td> </tr> </table> </div> </body> </html>
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