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](https://askubuntu.com/questions/25597/using-a-displaylink-usb-video-adapter)
[example 2](https://askubuntu.com/questions/40031/how-do-i-use-a-displaylink-monitor)
[example 3](https://askubuntu.com/questions/98916/how-do-i-configure-a-displaylink-usb-monitor)

However, there are [some indications](http://www.zdnet.com/ubuntu-12-10-quantal-quetzal-review-7000005929/) 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?