Could you be running into bug #855943? It's been fixed, but the symptoms look very similar, and it's possible the fix didn't make it into Precise for some reason...
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/921384 Title: [MASTER] Xorg crashes when trying to play a video with XV under xserver 1.11 - xs111LookupPrivate To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/921384/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs