I have this problem as well, after upgrading to 13.04 (did not experience it before). I've tried upgrading to the 3.9 kernel, but no difference (if anything it crashes more often). There is nothing as such that seems to set it off - about every two-three hours (at most) the screen just freezes up, and then after a few seconds I can use the mouse but all windows are unresponsive.
Interestingly, it's not a complete freeze - I can ctrl+alt+f1 to another terminal, killall lightdm, then start it again and get a new session running. Still, the upgrade to 13.04 has left my work computer in a rather bad shape and if there was an easy way of downgrading I'd chuck this version out as fast as I could. -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to a duplicate bug report (644740). https://bugs.launchpad.net/bugs/946899 Title: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/946899/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
