This may be another, hopefully unrelated issue (regression in recent Xserver), as reported here: https://bugs.freedesktop.org/show_bug.cgi?id=56835
** Bug watch added: freedesktop.org Bugzilla #56835 https://bugs.freedesktop.org/show_bug.cgi?id=56835 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/541492 Title: MASTER: [i845] GPU lockup Status in X.org xf86-video-intel: Fix Released Status in “xserver-xorg-video-intel” package in Ubuntu: Triaged Status in “xserver-xorg-video-intel” source package in Lucid: Triaged Status in Baltix GNU/Linux: New Bug description: Binary package hint: xserver-xorg-video-intel This is a MASTER bug report, i.e. not a real bug report, but a tool to help manage other bug reports. Most bug reports on i845 are probably due to the CPU/GPU incoherency problem that is now consolidated upstream at http://bugs.freedesktop.org/show_bug.cgi?id=26345 . For now, we mark all automatically reported GPU lockups as duplicates of this unless there is a reason not to. To use the available fix, run the following commands: apt-add-repository ppa:glasen/855gm-fix apt-add-repository ppa:brian-rogers/graphics-fixes apt-add-repository ppa:glasen/intel-driver aptitude update aptitude install linux 855gm-fix-dkms aptitude dist-upgrade There is a similar master bug report for i855 at bug 541511. To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/541492/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp