Comment 20 for bug 812594

@Damion
Hello, sorry for a silence. I made few another tests with newly released distros and some researches.
Actually I found something interesting in this subject, you can read about it here:

http://www.google.pl/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&ved=0CDsQFjAC&url=http%3A%2F%2Fsuperuser.com%2Fquestions%2F502359%2Fis-it-possible-to-have-displaylink-usb-display-hotplugging-with-xorg-1-13-on-ker&ei=LLqvUMb5J5PU4QTz04HoCw&usg=AFQjCNHNIoEnRbkBXBrZyRP5HxzvQUStoQ

Follow discussion and links, especially those from article on Phoronix.

Shortly summarizing the subject:
To get several, different video drivers working together under 1 instance of Xorg, there's a need to have PRIME implemented in kernel, Xorg, randr / xrandr.
However my tests performed on kernel 3.6.x and Xorg 1.13 showed that, there's a need to introduce improvements, because things are not working completely like P'n'P - there's too many bugs as for now.

I'm waiting for final release of Fedora 18, becasue probably it may have PRIME implemented and working.
Most likely its only a question of time to get DL devices fully supported in Linux and personally I'm expecting this to happen in the year 2013.