Bug#648598: Gnome3: complete system freeze, fallback OK

[Alex Deucher]

On Sun, Nov 13, 2011 at 5:26 AM, Joost Kraaijeveld
<J.Kraaijeveld at askesis.nl> wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:6.14.3-1
> Severity: critical
> Justification: breaks the whole system
>
> Dear Maintainer,
>
> After some time running Gnome3 with the new shell my system lock up. It completely freezes, nothing works: no alt+F1 ,
> ctrl+alt+del, alt-backspace, no remote login via ssh possible and the machine does not respons to pings. The only way to reboot
> is using the power button (off and than on). Just using the reset button results in not finding the boot disk anymore. I can't find
> anything in any of the log files (messages, kernel, debug, daemon). The freeze *almost* always happens during drag and drop operations or when using the mouse to click on icons (menu, evolution expanding threads etc). Sometimes it happens when doing nothing with the system but when audio is playing. Running Gnome3 in the fallback mode works OK and no freeze happens.
>

I would suggest using KMS rather than UMS.  When you switch to KMS,
I'd also suggest using the r600 gallium 3D driver and removing the
Virtual line from your xorg.conf.

Alex