Comment 10 for bug 1225325

Dmitry Schanev, ok. If it continues to happen, so your hardware and problem may be tracked, could you please file a new report by executing the following in a terminal:
ubuntu-bug xorg

Please ensure you have xdiagnose installed, and that you click the Yes button for attaching additional debugging information.

When opening up the new report, please feel free to subscribe me to it.

Thank you for your understanding.