On Wed, 21 Dec 2011 12:00:37 -0800 Keith Packard (KP) wrote: KP> On Wed, 21 Dec 2011 19:54:10 +0100, Udo Steinberg <udo@xxxxxxxxxxxxxx> wrote: KP> > Hi, KP> > KP> > With Linux-3.2-rc6 I'm frequently seeing GPU hangs when large amounts of KP> > text scroll in an xterm, such as when extracting a tar archive. Such as this KP> > one (note the timestamps): KP> KP> Can you try with semaphores disabled? KP> KP> i915.semaphores=0 That makes the problem go away. If you need more help tracking down the problem, then let me know. I can reproduce it fairly easily with something as simple as: while true; do dmesg; done KP> And, you should be able to remove the explicit rc6 argument now; if it KP> will work, the kernel should turn it on automatically. Ok. Cheers, - Udo
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