Format for the Bus ID

El1iP3S01D · 04-09-2008, 04:37 PM

What is the proper format for PCI Id when you are configuring the nvidia driver in Xserver-xorg? I forgot to add my Geforce 8800 GTX id is PCI ID 0x0191, everytime i type this into the editor it states wrong format for pci id...Can any of you help me?

Dutch Master · 04-10-2008, 08:54 AM

Don't do it by hand, run the installer again.

Junior Hacker · 04-11-2008, 06:48 PM

The PCI Id refers to "which PCI slot" it's plugged into on the mother board. If I remember correctly, when you run the command as root: dpkg-reconfigure xserver-xorg, you run the xserver configuration utility and the format is similar to: 0:0:0 . I usually just leave it at the default the reconfiguration utility suggests and it works.

archtoad6 · 04-15-2008, 01:15 PM

I agree, it's better not to try this by hand. But if you insist/have to, here's what I know about the format & meaning of the numeric specifier.

Although I'm not about to risk messing up my config by running dpkg-reconfigure xserver-xorg, this is what I get from lspci:

Code:

# lspci
0000:00:00.0 Host bridge: ...

from http://linux.die.net/man/8/lspci:

Quote:

-s [[[[<domain>]:]<bus>]:][<slot>][.[<func>]]
Show only devices in the specified domain (in case your machine has several host bridges, they can either share a common bus number space or each of them can address a PCI domain of its own; domains are numbered from 0 to ffff), bus (0 to ff), slot (0 to 1f) and function (0 to 7). Each component of the device address can be omitted or set to "*", both meaning "any value". All numbers are hexadecimal. E.g., "0:" means all devices on bus 0, "0" means all functions of device 0 on any bus, "0.3" selects third function of device 0 on all buses and ".4" shows only the fourth function of each device.

So, a complete ID would be DDDD:BB:SS.F

I KNOW that some systems (distros?, kernels?) omit the domain ("DDDD"),
I don't know if you are obligated to pad the fields to the # of digits shown
I know the delimiters are 2 colons (':') & a period ('.').

HTH, & good luck.

makuyl · 04-15-2008, 03:33 PM

Code:

grep PCI /etc/X11/xorg.conf
       BusID           "PCI:1:0:0"

Try with:

Code:

Xorg -scanpci

or just look at "man xorg.conf"
Me wonders if the OP hasn't solved this already though.

archtoad6 · 04-16-2008, 06:58 AM

Then s/he should post that & how it was done.