The only other reason is that the kernel module is not autoloaded. Again it's fixed in more recent kernels.
-- Backlight control does not work on MacBook Pro 3.1 https://bugs.launchpad.net/bugs/226894 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
