https://bugs.freedesktop.org/show_bug.cgi?id=48305
--- Comment #4 from Alex Deucher agd5f@yahoo.com 2012-04-04 13:45:21 PDT --- Make sure you install the debugging symbols for the 3D driver/mesa. Most distros package these separately. Then when you hit the crash type "bt" in gdb to get the backtrace.