Hi, i've had the same Problem but i resolved it now. It sounds like an error in the "libdrm-intel1" package with the version 2.4.19-git20111215... To resolve use the previous version since a new version is available.
1) show actual version dpkg -l |grep libdrm-intel ii libdrm-intel1 2.4.29+git20111215.0ab2251b-0ubuntu0sarvatt2~oneiric Userspace interface to intel-specific kernel DRM services -- runtime rc libdrm-intel1:i386 2.4.29+git20111215.0ab2251b-0ubuntu0sarvatt2~oneiric Userspace interface to intel-specific kernel DRM services -- runtime 2) show available versions apt-cache showpkg libdrm-intel1 Package: libdrm-intel1 Versions: 2.4.29+git20111215.0ab2251b-0ubuntu0sarvatt2~oneiric (/var/lib/apt/lists/ppa.launchpad.net_xorg- edgers_ppa_ubuntu_dists_oneiric_main_binary-amd64_Packages) Description Language: File: /var/lib/apt/lists/ppa.launchpad.net_xorg-edgers_ppa_ubuntu_dists_oneiric_main_binary-amd64_Packages MD5: a0ec257 ...... ...... ...... Provides: 2.4.29+git20111215.0ab2251b-0ubuntu0sarvatt2~oneiric - 2.4.26-1ubuntu1 - Reverse Provides: 3) install previous version apt-get install libdrm-intel1=2.4.26-1ubuntu1 4) reboot reboot -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/903831 Title: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/903831/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs