This looks like a possible bug in the intel driver, can you all confirm you are using the intel Xorg driver and which version you have by running:
dpkg -l xserver-xorg-video-intel|grep ^ii|awk {'print $2" "$3'} in a terminal and copy the output to a comment here? My output from the dpkg command: xserver-xorg-video-intel 2:2.4.1-1ubuntu2 -- [intrepid] gnome-screensaver + compiz makes Xorg freeze? https://bugs.launchpad.net/bugs/264953 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs