XEN does not boot into X Windows

Hi,
First, thanks to Paul for instruction, I’m able to use 3D on Xen now, but with one issue.
I’m not sure if anyone else experiencing the same: after I followed instruction I can’t see anything while in TTY any more if I boot xen kernel.
There is no problems if I boot to desktop kernel
If I press Ctrl+Alt+F1 or Ctrl+Alt+F2 etc. my monitor goes into power save mode, there is no problem get back to X by pressing Ctrl+Alt+F7 though.
When I am in TTY even though monitor in power save mode I still can type and execute commands and they are working.

I’m using OpenSuse 11.2 64 bit, my graphics card GeForce 9600 GT,
Xen kernel is 2.6.31.12-0.1-xen
Installed driver version: NVIDIA-Linux-x86_64-185.18.36-pkg2.run

So far I tried to change boot parameter vga=0x31a to lower 305 and even to text mode didn’t work.

I wonder if anyone came across some fix or workaround?

Thanks in advance.