Have you looked at bug 518002? Particularly at workaround 2 (setpci -s 00:02.0 F4.B=a1). Does that work for you?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/392948 Title: LCD Brightness won't Change - intel 4 series -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
