Please try the 'xbacklight' command. And see also https://bugzilla.gnome.org/show_bug.cgi?id=688052
** Also affects: gnome-power-manager (Ubuntu) Importance: Undecided Status: New ** Bug watch added: GNOME Bug Tracker #688052 https://bugzilla.gnome.org/show_bug.cgi?id=688052 ** Also affects: gnome-power via https://bugzilla.gnome.org/show_bug.cgi?id=688052 Importance: Unknown Status: Unknown ** Changed in: gnome-power-manager (Ubuntu) Status: New => Confirmed ** Changed in: gnome-power-manager (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1720438 Title: brightness control broken nvidia To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-power/+bug/1720438/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs