Ubuntu
xserver-xorg-video-ati package

  1. Bug #195051
  2. Comment #36

Comment 36 for bug 195051

Revision history for this message
Forlong (forlong) wrote : Re: X freezes in drmCommandWrite() when Compiz is enabled on ATI Radeon Mobility 9600

Kris, thanks for taking the time to work on this.
Like I said in the upstream report I filed over at fd.o (http://bugs.freedesktop.org/show_bug.cgi?id=15096) this issue is not limited to Compiz but 3D apps in general.

I tried your suggestion and I do not have the same problem with the Braid screensaver. I can watch it in the preview just fine for several minutes (although I noticed it does not work properly in fullscreen – no freeze, though).
It's not a 3D screensaver anyway, so I guess your problem is not exactly the same. X never recovered here from the freeze also (at least not within an hour, which was the longest time I waited one time).

But I tried the Bubble3D screensaver next to it and the X almost instantly froze.
Interestingly the backtrace is more verbose this time (attached).