Same problem with my Asus S56CA-XX030R ultrabook. The brightness decreases for one single level, and remains unchanged on further tries. Fixed it by installing xbacklight and using command : xbackligh -set xx
where xx range from 00 to 100 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1183942 Title: Cannot adjust screen brightness in DELL XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1183942/+subscriptions _______________________________________________ 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
