According to the XRANDR spec [1] the correct property is "Backlight".
[1] http://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt ** Package changed: gnome-settings-daemon (Ubuntu) => gnome-desktop3 (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/947919 Title: Can't change brightness with keyboard or with "Brightness and Lock" settings panel Status in “gnome-desktop3” package in Ubuntu: Triaged Bug description: gnome-settings-daemon 3.3.91-0ubuntu1, gnome-control-center 1:3.3.90-0ubuntu5, Ubuntu 12.04 beta 1. Press the Brightness keys on the keyboard. 2. In System Settings, click "Brightness and Lock". What happens: 1. Nothing. 2. The "Brightness and Lock" panel does not contain any brightness settings. What should happen: 1. The brightness changes. 2. The "Brightness and Lock" panel contains a brightness slider. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-desktop3/+bug/947919/+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

