I'm effected by this problem or a similar issue as well. Give this a try and see what you get; when using your hotkeys continue to hold down the hotkey (for example if your stuck all the way up, use your hotkey to turn it all the way down and continue to hold the down hotkey for a period of usually 15 seconds or so). On my machine this will eventually change the backlight brightness, leading me to believe the problem is something to do with when the kernel is checking for changes in the control files. Incidentally I can also get the backlight to change to, at least close, to what I want by toggling back and forth between the level I want, and the level above or below it, for example if I want it set at 3, I can toggle back and forth between 3 and 4 and eventually it will change to one of those two levels, not how its supposed to work but better than all the way up or all the way down.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181927 Title: 13.04: Brightness control visible but does nothing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181927/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
