Failed to open DRM device

[Alex Deucher]

On Mon, Oct 25, 2010 at 12:17 PM, Zhang Weiwu <zhangweiwu at realss.com> wrote:
>  On 10/25/2010 11:50 PM, Alex Deucher wrote:
>>
>> You can specify the busid of the card you want X to start on in the
>> device section of your xorg.conf:
>> e.g.,
>>
>> BusID "PCI:2:0:0"
> I am confused. My second post showed than when things works, X is using
> 0000:1:0:0, so my preferred card should be PCI:1:0:0, still in the
> "things doesn't work case", the "ls /dev/dri/card*" is empty (as shown
> in my first post), so would xorg stop complain about missing device node
> simply because I specified BusID?
>
> Or, does the fact Xorg fail to start on PCI:1:0:0 /while/ dmesg complain
> about something wrong on 0000:02:00:00 confuse you to think I intended
> to use PCI:2:0:0? The same fact confused me too, as I expect to see
> error message of 00000:01:00:00 in both dmesg and Xorg.log.
>
>

Sorry, I just used 2:0:0 as an example.  replace it with whatever pci
bus id you want X to start on.

Alex