Happens for me too on my ThinkPad T60p with a Mobility FireGL V5200 graphics device.
Graphics driver: radeon Kernel: 2.6.31-14-generic #46-Ubuntu SMP Tue Oct 13 16:47:28 UTC 2009 x86_64 GNU/Linux Trying to lock the screen after the first time just gives me the error «** Message: Screensaver is not running!» -- Screen lock unlocks after 5 wrong attempts https://bugs.launchpad.net/bugs/446395 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