Chapter 21. Using the Proc Filesystem Interface
Prev | Part I. Installation and Configuration Instructions | Next

## Chapter 21. Using the Proc Filesystem Interface

You can use the /proc filesystem interface to obtain run-time information about the driver, any installed NVIDIA graphics cards, and the AGP status.

This information is contained in several files in /proc/driver/nvidia

/proc/driver/nvidia/version

  Lists the installed driver revision and the version of the GNU C compiler used to build the Linux kernel module.

/proc/driver/nvidia/warnings

  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 `/var/log/messages`.

  Important NVIDIA warning messages are also logged to dedicated text files in this /proc directory.

/proc/driver/nvidia/cards/0...3

  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.

/proc/driver/nvidia/agp/card

  Information about the installed AGP card's AGP capabilities.

/proc/driver/nvidia/agp/host-bridge

  Information about the host bridge (model and AGP capabilities).

/proc/driver/nvidia/agp/status

  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.

  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.

  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.

Prev | Up | Next
Chapter 20. Configuring Flipping and UBB | Home | Chapter 22. Configuring Power Management Support