[Bug 38322] ColorTiling + DualHead (xrandr) + screensaver -> GPU lockup on RV620

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=38322

--- Comment #8 from Jan Kriho <Erbureth at gmail.com> 2011-08-09 05:00:18 PDT ---
(In reply to comment #6)
> (In reply to comment #6)
> > While running KDE 4.6.3 (Compositing enabled)
> 
> Does disabling compositing or tiling work around the problem?

Disabling compositing does not help, as I turn it off when using second monitor
for performance reasons. 

Before enabling Color Tiling I haven't encountered the problem. Now I have it
turned on again for performance reasons.

> 
> > on two monitors (configured with XRandr),
> 
> Please attach the output of
> 
> xrandr --verbose
> 
> when both monitors are enabled.

Please see the last attachments.

> 
> > when Goban screensaver starts, the whole graphic system freezes (box
> > is still SSH-able tough) and only SysRq combo can reboot the machine. 
> 
> If you ssh in, is the X server (and goban, ...) process still alive? If yes,
> can you attach gdb to the X server and get a backtrace?

I will do so when I encounter the loop again. It is now not-so-predictable and
various applications can trigger it in non-deterministic way.

Also I have upgraded my ati drivers yesterday (to the git head version) and I
don't know yet if the problem persists.

> 
> > Renderer: Mesa 7.10.2 r600g
> 
> Would a newer version of this help by any chance?


Upgrading to 7.11 branch (from Debian experimental repository) did not help.

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