What do you mean by "not adjustable"? You do not have UI controls to adjust it? Or the UI controls that should adjust it just do nothing? If it is the 2nd option, then I have reported a duplicate (and have a work- around).
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1377351 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1313892 Title: Display Brightness not Adjustable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1313892/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs