Hello cid,
Thanks for contacting. If you could verify first if your setup meets the requirement listed here:
http://support.displaylink.com/knowl...ware-on-ubuntu
This possibly might help. If you still see the problem please gather logs as described in this article:
http://support.displaylink.com/knowl...rticles/757047
and then attach the zip replying to this thread.
Thanks,
Szymon