Bug#536098: xserver-xorg-video-radeon: deterministic X lockup with dri

[Alex Deucher]

On Mon, Feb 21, 2011 at 12:46 PM, Cyril Brulebois <kibi at debian.org> wrote:
> Hi!
>
> Alex Deucher <alexdeucher at gmail.com> (08/07/2009):
>> On Wed, Jul 8, 2009 at 8:22 AM, Jonathan Rafael
>> Ghiglia<jrghiglia at gmail.com> wrote:
>> > I can't mess up with this computer right now. I tried the packages
>> > from unstable (7.4*) with no luck (same bug).  Again, changing AGP
>> > mode has no effect, while turning on PCI mode (apparently) solves
>> > the problem, but reduces performances.
>>
>> In that case it could be a flakey AGP bridge on your computer.  Most
>> AGP chipsets were in one way or another.
>
> I'm not sure where to go from here. Call it a hardware bug and close
> this report? Jonathan, what do you think?
>

I would suggest trying a kms enabled kernel.  If you have problems try
booting with radeon.agpmode=x where x = -1 or 1 or 2 or 4 or 8 on the
kernel command line in grub.  -1 disables agp and uses the internal
gart mechanism, which should work but with reduced performance.  1-8
will change the agp mode accordingly.

Alex

> KiBi.
>
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