https://bugzilla.gnome.org/show_bug.cgi?id=594760 seems to be the right upstream bug.
** Bug watch added: GNOME Bug Tracker #594760 http://bugzilla.gnome.org/show_bug.cgi?id=594760 -- Karmic upgrade not shutting off backlight after time https://bugs.launchpad.net/bugs/413168 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs