https://bugs.freedesktop.org/show_bug.cgi?id=50655
Bug #: 50655 Summary: ATI RV670 [Radeon HD 3870] Ioquake games causes GPU lockup (waiting for 0x00003039 last fence id 0x00003030) Classification: Unclassified Product: Mesa Version: git Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: major Priority: medium Component: Drivers/DRI/R600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: BryanQuigley@Ubuntu.com
Created attachment 62474 --> https://bugs.freedesktop.org/attachment.cgi?id=62474 kern.log
Tested and reproducible with Urban Terror, Warsow, and World of Padman. Used phoronix test suite, and at some point during the run of each game, it would either freeze or eventually display weird output to the screen (attached).
Occasionally a VT switch would let the game "appear" again. Other times you can hear the sound of the game continue.
I am using the 3.4 kernel and drivers/X, etc from Xorg Edgers PPA, which for the ati driver would be 6.14.99+git20120525.b1e9c308 and mesa is 8.1~git20120530.ff3eef1a.
You should be able to reproduce this by: Installing phoronix test suite (http://www.phoronix-test-suite.com/?k=downloads) and then running: phoronix-test-suite benchmark urbanterror (or warsow or padman)