Comment 37 for bug 762918

I am having this problem too and I am running Natty 32bit on a desktop (Lenovo ThinkCentre 8810-AA5) with an Intel onboard graphics card (00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)).
The workaround that I am using is:
- switch to a console using Ctrl-Alt-F1.
- ps aux|grep gnome-screensaver to get the process ID
- kill -9 <pid>
- switch back to the X