it is so broad because the event changes in relation to the brightness value. for example if the value is 0 the event will end with "1"! if the value is 15 instead it will end with "f"
-- asus brightness hotkeys https://launchpad.net/bugs/76593 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs