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 Bugs, which is subscribed to 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 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
