[CentOS] App not finding /dev/nvidia0 for /dev/dri/card0 not found on inspiron 8200 with nvidia chipset

Jim Perrin jperrin at gmail.com
Tue Nov 8 16:09:15 UTC 2005

On 11/7/05, Jerry Geis <geisj at pagestation.com> wrote:
> I have source for a program that is attempting to open
> /dev/nvidia0 then on failure open /dev/dri/card0
> to get some vsync settings.
> Neither of those two files is found on my laptop in /dev.
> Is this because of udev?

No, /dev/nvidia0 exists on my centos 4.2 box in /dev
You should check that you have nvidia's drivers installed correctly
and that the nvidia module is loaded by checking with lsmod.

> Any ideas on what to open to read vsync information
> from X windows?

I think xdpyinfo gives you this. I can't remember.

Jim Perrin
System Administrator - UIT
Ft Gordon & US Army Signal Center

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