It appears you've been running natty for some time now; I gather this is the first time you've encountered this GPU lockup? (It's a code I don't recognize, so I'm wondering if it is a recent regression). If you've seen it before this report, do you know about when you first saw it?
Can you post your /var/log/dpkg.log? ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Confirmed ** Changed in: xserver-xorg-video-intel (Ubuntu) Importance: Undecided => High ** Summary changed: - [i965gm] GPU lockup (IPEHR: 0x14000000) + [i965gm] GPU lockup (IPEHR: 0x14000000) - Black screen -- 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/757968 Title: [i965gm] GPU lockup (IPEHR: 0x14000000) - Black screen _______________________________________________ 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