This is still a problem, and not solved by the Nvidia guys. https://devtalk.nvidia.com/default/topic/539462/linux/-nvidia-319-12 -brightness-controls-not-working-on-laptop-ubuntu-13-03-/4/
So no solution yet for us... ** Changed in: xorg (Ubuntu) Status: Expired => Confirmed ** Also affects: nvidia-graphics-drivers-346 (Ubuntu) Importance: Undecided Status: New ** Also affects: nvidia-graphics-drivers-340 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1281019 Title: 10de:0dda [HP EliteBook 8560w] Brightness controls are not working nvidia-319 and nvidia-331 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-340/+bug/1281019/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs