Ubuntu Feisty vs Radeon R200 QM [Radeon 9100]
This is the third time in the total of three weeks this machine has been running that xorg and the console have become unresponsive while running the "flurry" screensaver. The screensaver would freeze on the screen, and unresponsive to mouse and keyboard input like ctrl+alt+f1, or sysctl commands.
The second time I logged into the machine via ssh and found xorg spinning on the cpu. Unfortunately, when I tried connecting strace to the process, the entire machine became unresponsive.
The third time, I installed oprofile with:
apt-get install oprofile linux-image-debug-`uname -r`
The system ended up spending most of its time in the native_read_tsc() kernel function which doesn't make any sense to me because that is for very fast timing. Unless it was stuck in a busyloop waiting for progress that never happens. But why wouldn't the kernel be able to kill or trace the process?
I have commandeered ubuntu bug #65620 since it closely matches this problem and has been closed because of original bug reporter neglect.
Tags: bug, radeon, ubuntu, xorg
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