verified. i have the ul30a-x5 version, bt4 works perfect although i had a prob with resolution after a fresh install to hard drive. Neither fixvesa nor manual changes xorg.conf would change my res to 1366x768. it worked after quitting X and running dpkg-reconfigure xserver-xorg. Although multimedia keys dont work, the screen brightness and on/off toggle buttons do.
(volume/mute keys can easily be set in Kmix -> Settings -> Configure Global Shortcuts.)