Which version of restricted-manager do you use (dpkg -l restricted- manager)? Did you configure the BusID manually before?
** Changed in: restricted-manager (Ubuntu) Status: Unconfirmed => Needs Info -- Restricted Driver Manager adds invalid BusID in xorg.conf in Video-Card section https://launchpad.net/bugs/93075 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs