https://bugs.freedesktop.org/show_bug.cgi?id=30385
--- Comment #7 from Tomasz Czapiewski xeros@irc.pl 2010-09-28 12:22:19 PDT --- I've tried different vblank_mode settings and with set to 0 or 1 the problem is gone but after setting it to more than 1 or without any vblank_mode setting the problem is still there on Mesa 7.10.0~git20100927+gallium+r300.029c099b-0ubuntu0tormod. What can I do more to get more information to help track this bug? As I've said before, there's no error in dmesg or other logs for this issue.