https://bugzilla.kernel.org/show_bug.cgi?id=16019 --- Comment #38 from Klaus Lichtenwalder <lichtenwalder@acm.org> 2010-07-01 05:04:30 --- I don'r know whether this is related, but one in a while I have a lockup of the X server. I can move the mouse, and switch to the tty consoles, and log in, but for a working X I have to reboot. Yesterday I saw in dmesg: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung render error detected, EIR: ...