How about passing video.use_native_backlight=1 to kernel, or try Utopic's 3.16 kernel?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1407604 Title: [Dell Inspiron 7548] Brightness control does not work on 14.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1407604/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
