I am running 13.04 with the linux-image-3.8.0-26-generic kernel and experienced this problem.
The best way I found to reproduce the problem systematically is by playing "Revenge of the Titans": after at most 5 minutes the system hung for a few seconds and afterward it was slow/choppy with video acceleration problems (GPU hung in the logs). I tried linux-image-3.9.8-030908-generic and linux- image-3.9.9-030909-generic (saucy) from http://kernel.ubuntu.com /~kernel-ppa/mainline/ and they work fine: when playing, sometime they hang for a short time, but afterwards the system recovers 100%. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1140716 Title: [regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs on Sandybridge To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1140716/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs