Is your bug related with bug #65028 ? Because in this case we can link them as a general problem with different models of Sony laptop, and mark this bug as a duplicate of the other (I can do that immediately, but I prefer tell you of it before).
-- Brightness controls do not work https://launchpad.net/bugs/67074 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
