John Lenton, thank you for reporting this bug to Ubuntu. Utopic reached EOL on July 23, 2015. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases
If this is reproducible in a supported release, please file a new report. ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1345180 Title: [arrandale mesa] False GPU lockup IPEHR: 0xffc2c2c2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1345180/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs