Comment 75 for bug 1234818

I plan to look into this within the next week. But for reference. here are some links:

For getting it to work (assuming the kernel works, might have to have a vanilla kernel):
https://wiki.archlinux.org/index.php/DisplayLink
Really just this part: https://wiki.archlinux.org/index.php/DisplayLink#udl
http://packages.ubuntu.com/saucy/xserver-xorg-video-modesetting

Related (but mostly empty) bug:
Bug #1287966: https://bugs.launchpad.net/ubuntu/+source/linux-lts-saucy/+bug/1287966