You need to get a backtrace of the hang: https://wiki.ubuntu.com/X/Backtracing
** Changed in: xorg (Ubuntu) Status: New => Incomplete -- Jmonkeyengine demo causes system to freeze https://bugs.launchpad.net/bugs/500226 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs