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
Created attachment 43388 [details] glxinfo output
Created attachment 43389 [details] Xorg log file Does not show anything at the lock up time
Does disabling pageflipping (in the device section of your xorg.conf) help? Option "EnablePageFlip" "False"
*** This bug has been marked as a duplicate of bug 33515 ***
Disabling pageflipping does not help.
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