Dual PCI-E radeon R420 & R700 KMS xorg 1.9.5 & linux - Mesa DRI bug.

Alex Deucher alexdeucher at gmail.com
Tue May 31 17:02:05 PDT 2011

On Tue, May 31, 2011 at 7:19 PM,  <wallak at free.fr> wrote:
> Hi All,
>   I was trying the last xorg packages available (Xorg 1.9.5) with my dual PCI-E
> express configuration (kernel Everything work fine, with two X11
> instances for each board, except the DRI (Mesa) operation on the secondary
> board. The secondary board log is OK, and shows that the DRI module start
> without any error. When I launch, e.g. a xscreensaver Mesa demo, the software
> lock-up and nothing happened on the screen.
> We can notice that, the first board works flawlessly (R700), and the secondary
> board (R420) works perfectly when using the same configuration and this board
> alone.
> Everything look like the secondary board (R420) is fully operational with Mesa:
>> DISPLAY=:1.0 xdriinfo
> Screen 0: r300
> Any idea ?

Are you trying to use xinerama?  Direct rendering doesn't work with xinerama.


>  A last issue, I've tried with last packages available and Xorg 1.10.1 with the
> same kernel. The secondary board in this case was unusable. The secondary server
> failed to start. I don't know the status with 1.10.2.
> Best Regards,
> Wallak.
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