Start mate on second separate xscreen?

I have used separate screens offered the nvidia driver, my working system 2011.

Finally I decided to upgrade (ubuntu 8.04 mate), but I can’t run mate on both displays on my desktop system.

xserver starts up and works fine, but mate does not start.

I try
mate-session --display=:0.1
but image is blinking and not work

How do I solve my problem, please help!
This functionality is very important for many users!