I think unloading the video module is not enough, you have to blacklist it and reboot. I've reported a very similar bug (bug #74284) a long time ago.
-- [hardy] [regression] LCD brightness control (Dell) no longer works https://bugs.launchpad.net/bugs/212733 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
