Description of problem: A user was playing Neverball (from Fedora games) when the system froze. I was able to get to a tty login and kill the process. However, we then got hundreds error messages. Getting back to GUI we found it was unusable. (Still frozen) Version-Release number of selected component (if applicable): kernel 2.6.35.6-45.fc14 How reproducible: intermittent Steps to Reproduce: 1. play Neverball Hard, "Pipe" 2. freezes 3. go to TTY (ctl-alt-F2) and log in, kill process Actual results: Hundreds messages on screen, similar to this with n represent numbers: [nnn.nnnnnn] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting nnnnn at nnnnn) [nnn.nnnnnn] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung ... Switch back to GUI is possible but no work can be done -- it is still frozen. From the TTY, I was able to log in as root and do a shutdown -r to reboot the system. Expected results: No GPU hang. If process has to be killed, system returns to normal after it. Additional info:
I am also receiving the "[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed" message in /var/log/messages on Fedora 15. Every time this happens, I'm experiencing a significant (sometimes up to 2 seconds) lag performing Gnome Shell actions like changing workspaces or entering/exiting the overlay. There is a patch to fix this available on the linux-kernel mailing list: http://marc.info/?l=linux-kernel&m=130833614308275&w=2 Please provide a kernel update with this fix ASAP. This bug is making Gnome 3 nearly unusable on Sandy Bridge hardware.
I've tested the patch in comment #1 as part of 2.6.38.8-34 (not pushed to bodhi yet): https://koji.fedoraproject.org/koji/buildinfo?buildID=250085 It fixes the easily reproducible issue for me. thanks!
I have also been testing kernel-2.6.38.8-34.fc15 successfully.
Dave, it seems the patches you added to the koji build referenced in comment #2 solved the issues for people on F15. Are those (or just the patch in comment #1) safe to bring back to F14, which is 2.6.35 based?
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