Ubuntu
linux package

  1. Bug #305979
  2. Comment #32

Comment 32 for bug 305979

Revision history for this message
In , Martin Olsson (mnemo) wrote :

Created an attachment (id=21864)
xorg_log, dmesg, gdb, uname and 2 snapshots of /proc/dri/0/i915_gem_interrupt

Today my X hung again with the same gdb stack (but no EQ overflow spam in xorg_log). I had refresh jaunty packages installed which means:

libdrm-intel1 2.4.1-0ubuntu9
xserver-video-intel 2.5.1-1ubuntu7
libgl1-mesa-dri 7.2+git20081209.a0d5c3cf-0ubuntu4
Linux kingfish 2.6.28-4-generic #9-Ubuntu SMP Tue Jan 6 19:33:48 UTC 2009 x86_64 GNU/Linux

This time I sampled /proc/dri/0/i915_gem_interrupt with a couple of seconds in between and I saw that the "Interrupts received" was still being incremented even though X was hung.

This bug happens much more rarely now on ubuntu jaunty and I don't have specific repro steps so I can't really test patches effectively.

Is there any thing in general I can do inside Ubuntu so stress test "vblanking"? Maybe I can run some special part of x11perf or use some screensaver or something that increases the probability that I will hit this bug? Anyone got any ideas?