It's possible that your laptop model doesn't support the necessary SMI calls, and that is exactly what it is sounding like the issue is.
-- Brightness and dim on idle/battery do not work on Dell laptop https://bugs.launchpad.net/bugs/201433 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
