The problem with idle dimming enabled would be when the user stops being idle. The brightness would be "reset" to whatever g-p-m thinks the brightness is (100% by default), instead of what it was actually set to using the fn keys.
-- Screen brightness resets to default (maximum) on idle with AC plugged in https://bugs.launchpad.net/bugs/137598 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs