[plug] decent dual head card with xinerama on X 6.9/7.0?

[Mike Holland]

Leon Brooks wrote:

> The multi-head Radeons have a Xinerama-like mode (MergedFB) which treats 
> multiple screens as a single surface on multiple displays at the 
> hardware level. This means you get full-blast performance at a slight 

BTW, Works well, unless your displays are of different size, as the 
virtual desktop must be rectangular.