I have a DELL XPS L702X laptop with the nVidia GTX 555M 3GB RAM with the 120Hz 3D Screen.
I use Ubuntu 12.10 32-bit with the Experimental NVIDIA binary Xorg driver from nvidia-experimental-310(proprietary). Thanks to all the comments, I got my Fn+F4/F5 brightness working aswell. Though I did not have an /etc/X11/xorg.conf file to put the settings in, I created it manually using sudo gedit /etc/X11/xorg.conf and added only this: Section "Screen" Identifier "Default Screen" Option "RegistryDwords" "EnableBrightnessControl=1" EndSection and saved the file. I rebooted the system, and now the keys work. I hope the issue gets resolved at some point. Thanks again from a new Ubuntu user. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/762670 Title: Laptop brightness on Dell XPS not controllable Status in “gnome-power-manager” package in Ubuntu: Confirmed Bug description: ERROR: Method "GetBrightness" with signature "" on interface "org.freedesktop.UPower.KbdBacklight" doesn't exist The brightness of my laptop's screen is not changed at all when using the Fn-Keys. Ubuntu displays the notification area with the brightness setting displayed, it even shows that the brightness value is changed - but the actual brightness of the screen remains the same at all times! Laptop: Dell XPS 17, Full-HD 3D display, Nvidea graphics. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/762670/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
