I have an Acer Aspire 5750G with Ubuntu 12.10.
I have a problem with the brightness shortcut. If I press Fn+Right Arrowand Fn+Left Arrow, the brightness actually changes but not in the right way. On the other hand, when I type in the terminal
gnome-control-center screen, I can adjust the brightness in the proper way.
Is it possible to adjust the brightness of the laptop in the right way using the shortcut?
Remark: I found a lot of questions on AskUbuntu regarding brightness issues but here the problem is different; both "Brightness and Lock" and shortcuts work right now, but shortcuts do not work in the right way!