https://bugs.freedesktop.org/show_bug.cgi?id=34302

Summary: xf86-video-ati 6.14.0 hard freeze in fullscreen OpenGL applications Product: DRI Version: XOrg CVS Platform: x86 (IA32) OS/Version: Linux (All) Status: NEW Severity: critical Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: gabgav@hotmail.com

Kernel: 2.6.36 and 2.6.38-RC4 MESA: 7.10 with gallium and llvm enabled. Driver: xf86-video-ati 6.14.0 WM: Kwin 4.6.0 and TWM Card: Radeon Mobility X300

System locks up after running a fullscreen OpenGL application (e.g. glxgears and hedgewars). Using 2.6.38-RC4, the system locks up almost immediately after starting the application. With 2.6.36, glxgears does not lock up the system, but hedgewars does after a short period of time. KWin runs well and does not cause a system lock in either case. Running the programs under TWM also causes a lock up. xf86-video-ati 6.13 ran well. The lock up occurs with and without polling (Bug 29389). Occurs only with Gallium3D, classic runs well dmesg output at time of lock up was: [ 1290.006008] Uhhuh. NMI received for unknown reason a1 on CPU 0. [ 1290.006008] You have some hardware problem, likely on the PCI bus. [ 1290.006008] Dazed and confused, but trying to continue