I had a similar problem - because I had a BIOS password set. Try to unset the BIOS password if you have set one, then changing the brightness on idle should work.
-- Dim on idle/battery does 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
