Comment 2 for bug 378147

Thank you for reporting this bug. This is close to a perfect bug report and I was just about to send it upstream when I noticed that you are running the 2.6.28-11-generic kernel. You probably forgot step 0 in https://launchpad.net/~ubuntu-x-swat/+archive/x-freeze-test . Would you mind going through the same procedure and making sure that you are running 2.6.30-rc6 which you can get from http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30-rc6/

If you wish, you may then send the bug upstream yourself. A model bug report would probably be https://bugs.freedesktop.org/show_bug.cgi?id=21572 which is also a freeze bug forwarded from ubuntu (bug 356850). If you can also upgrade to 2.7.1 of the intel driver it would be even better (see https://launchpad.net/~ubuntu-x-swat/+archive/x-updates/).