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

[Alex Deucher]

On Wed, Jul 8, 2009 at 8:22 AM, Jonathan Rafael
Ghiglia<jrghiglia at gmail.com> wrote:
> On Tue, Jul 07, 2009 at 12:17:37PM -0400, Alex Deucher wrote:
>> On Tue, Jul 7, 2009 at 11:43 AM, Jonathan Rafael
>> Ghiglia<jrghiglia at gmail.com> wrote:
>> > Package: xserver-xorg-video-radeon
>> > Version: 1:6.9.0-1+lenny4
>> > Severity: normal
>> >
>> >
>> > I have an ATI firegl 8700.
>> > I'm using a custom kernel based on 2.6.30.1 but I get the exact same problem with the standard debian kernel (2.6.26 with debian testing).
>> >
>> > The problem shows with blender, but blender is the only GL application I (would like to) use.
>> >
>> > I can trigger the bug at will: launch blender, move the default cube right, change the view to "user" then move the cube again.
>> >
>> > Here I get the lockup.
>> >
>> > Xorg cpu usage goes to ~100 %.
>> > I can move the mouse, very slowly. Everything else is just dead.
>> >
>> > I can REISUB, and I can ssh into the computer, but I can't kill Xorg, just gdb-attach to it.
>>
>> The GPU has hung.  I'd suggest trying a newer mesa snapshot,
>> preferably 7.6 or git master.
>>
>> Alex
>
> 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.

Alex