I have a Dell latop and Ubuntu 12.04. The system will completely hang when I try to adjust the brightness either through the function buttons or through the system's brightness manager module. This hangs the system beyond the REISUB trick, I have to manually shut it down and I've had hard drive warnings because of this.
Brightness adjustment works flawlessly with
KDE, so the issue is with the Unity shell.
What can I do about this? Should I just report a bug or is there something I should try first?