I have just installed Ubuntu 13.10 and trying to adjust my laptop screen brightness. My laptop Dell studio 1558 has a key to change the screen brightness, though I reduced brightness to zero, I still see the brightness didn't change at all. Because of this my battery to running out quickly.
Is there any software which really makes a change in brightness.
I have tried the 'brightness and lock' in Ubuntu, but of no use.
Your help is really appreciated.