Can you check to see if GNOME Screensaver is running? It should have a processes listed if you run:
ps -ef ** Changed in: gnome-screensaver (Ubuntu) Sourcepackagename: gnome-power-manager => gnome-screensaver -- Xubuntu Screensaver and display sleep doesn't works https://bugs.launchpad.net/bugs/280394 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