I've solved problem by putting "blacklist video" in /etc/modprobe.d/blacklist
-- Screen brightness double level changes https://bugs.launchpad.net/bugs/207473 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
