I just hit this same IPEHR error on quantal with my i965gm based thinkpad X61. Got a new patch from upstream, and will upload it to quantal & precise soon..
** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Confirmed => In Progress ** Changed in: xserver-xorg-video-intel (Ubuntu) Assignee: (unassigned) => Timo Aaltonen (tjaalton) -- 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/912134 Title: [arrandale] GPU lockup render.IPEHR: 0x01840000 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/912134/+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