Comment 3 for bug 588125

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

Here you can find the specific instructions for a XServer Crash on Resume: https://wiki.ubuntu.com/X/Troubleshooting/XServerCrashOnResume