I can confirm the problem on a Dell XPS l702x with 3D NVidia GT 555m I have solved the problem here by adding the following to xorg.conf:
Option "RegistryDwords" "EnableBrightnessControl=1" Hope this helps, Pierre -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/762670 Title: Laptop brightness on Dell XPS not controllable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/762670/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
