I'm running Ubuntu 11.10 on ThinkPad X220.

Browsing through the ThinkWiki pages I stumbled upon [this information](https://www.thinkwiki.org/wiki/Installing_Ubuntu_11.04_(Natty_Narwhal)_on_a_ThinkPad_X220#Multiple_monitors):

> 
> **Multiple monitors**
> 
> 
> Configuring an extended desktop over two monitors led to malfunction.
> Side-by-side worked, one above the other did not.
> 
> 
> In natty the solution was just to avoid the layouts that caused the
> malfunction.
> 
> 
> The problems appear to have been completely solved in Ubuntu 11.10
> (Oneiric Ocelot).
> 
> 
> 

Has anyone of you managed to make X220 work with a dual monitor setup? Does it require UltraBase? Any special tweaks or modifications?