This is a common sporadic failure on gen4 chips. Upstream bug reports are:
https://bugs.freedesktop.org/show_bug.cgi?id=53379 https://bugs.freedesktop.org/show_bug.cgi?id=53385 For debugging work, there are some suggested avenues of analysis on the above bugs (e.g. git bisection between kernel 3.4 and 3.5). Reported workaround is to switch from UXA to SNA in your xorg.conf; SNA is not yet considered broadly stable enough for us to turn on as the default, but has been heavily tested upstream. ** Changed in: xserver-xorg-video-intel (Ubuntu) Importance: Undecided => High ** Bug watch added: freedesktop.org Bugzilla #53379 https://bugs.freedesktop.org/show_bug.cgi?id=53379 ** Bug watch added: freedesktop.org Bugzilla #53385 https://bugs.freedesktop.org/show_bug.cgi?id=53385 ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Confirmed => Triaged -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1043562 Title: [gm45] GPU lockup EIR: 0x00000010 PGTBL_ER: 0x00000001 IPEHR: 0x60020100 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1043562/+subscriptions _______________________________________________ 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
