Fixed following Arch-Wiki. Details in: https://nisheetlall.wordpress.com/2016/07/12/solved-brightness-fix-in-linux-1for-optimus-laptops/
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1255428 Title: 8086:0116 [Lenovo IdeaPad Z570] LCD brightness control keys and widget do not work on Intel Graphics To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1255428/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs