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The line of USB video adapters made by DisplayLink has a somewhat sordid history under Linux. In past Ubuntu releases, the process of getting them to work has been somewhat difficult, inspiring a number of past questions on this site:

example 1 example 2 example 3

However, there are some indications that version 3.5 of the Linux kernel (which is used by 12.10) contains better support for these adapters, which should make them easier to use. I currently have a single-GPU machine (it is an Nvidia adapter) with dual monitor outputs. I would like to add the DisplayLink adapter to drive a third external monitor. How can I set this up on Ubuntu 12.10?

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I hope someone gets this working. It would be nice to have a "this displaylink adapter works" post somewhere. – RobotHumans Oct 18 '12 at 19:43
@hbdgaf Seconded. I'll pay whatever they ask for one of these that works. – Jared Tritsch Nov 5 '13 at 17:42

I just added "blacklist udl" to /etc/modprobe.d/blacklist-custom.conf

and commented out "blacklist udlfb" from /etc/modprobe.d/blacklist-framebuffer.conf

This was enough to get the monitor to display the green screen of success.

After that it's just a matter of setting up xorg.conf in the same way as previous Ubuntu versions.

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Thanks - that helped a lot! – David de Rosier Mar 8 '13 at 8:05
I also confirm it got it working (green screen at least!) for me too (Ubuntu 12.10) – Matthieu Napoli Apr 3 '13 at 17:01
Sadly, that did not help me at all. – skeggse Jun 21 '13 at 1:04
I have this issue, but I do not know how to set-up my xorg.conf "like in previous versions". Link to tutorial? – Jared Tritsch Nov 5 '13 at 17:49

Here's how to get from green-screen to a static-image under Ubuntu 12.04:

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protected by Community Apr 3 '13 at 13:30

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