Do some google searches on 'displaylink linux' and see how linux users have been struggling for years.
Displaylink makes working drivers for Windows and Mac ONLY.
Displaylink conceal the functioning of their devices because they're paranoid about competition, preventing linux support.
http://displaylinklinuxdriver.wordpress.com
Displaylink pretend to be Linux friendly, but they're as bad as Nvidia.
Displaylink's policy won't change until the community puts pressure on them and boycotts their products.
Bump this thread if you support Displaylink opening up information to allow for Linux support.
Its important that we come back to this forum regularly and post and post our disagreement with Displaylink's policies and get the word out (on other forums and blogs) that Displaylink is not Linux friendly as they claim to be.
Look how many people have registered just to complain about Displaylink's lack of support for us as customers, to use what we paid for.
http://www.displaylink.org/forum/showthread.php?t=1748