Loïc, the GM45 should reset itself when it detects an error, but in your dmesg I can't see any error from drm (normally it's either "Hangcheck timer elapsed... GPU hung" or "render error detected"). You can increase the verbosity and display any messages from a reset with drm.debug=0x02 as kernel parameter.
It would be great if you can test the latest drm-intel-next kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/ and when this happens, ssh in and grab /sys/kernel/debug/dri/0/i915_error_state, /var/log/Xorg.0.log and the output of dmesg (preferably with drm.debug=0x02). -- [gm45] GPU lockup 196a8ae225e93814bc208433db407a36 https://bugs.launchpad.net/bugs/537198 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp