VGN-Z11VN/B owner here, running XP and Ubuntu 8.10. Intel card working fine, however nVidia isn't. Not too bothered about using nVidia but would really like to be able to have just one or the other adapters in use to save battery power. Once this problem has been sorted there is a scripted switching solution of sorts on this thread: http://ubuntuforums.org/showthread.php?t=980393&page=2
(see contribution from "HIHIHI").
Has there been any developments from the nVidia team on this?