*** This bug is a duplicate of bug 37555 *** the culprit is thinkpad-keys & gnome-power-manager. As mjg wrote on #37555:
"Ah! Can you go to System/Preferences/Power Management, select the "general" tab and disable "Dim the laptop panel when idle", then see if things work?" ** This bug has been marked a duplicate of bug 37555 screensaver doesn't activate -- Password dialog displayed immediately, without keyboard or mouse activity https://launchpad.net/bugs/38834 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs