A workaround: Pressing Ctrl + Alt + Fn as well as F10 or F9 (in my laptop a HP 6735b, or F1 to F6 in other laptops) to increase or diminish the screen brightness.
I found it at: http://www.tainguyen.com/linux/2011/05/01/it-is-finally- here-ubuntu-11-04-released/ -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/773415 Title: Natty: Screen brightness set to minimum and brightness controls not working _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp