mantisghost wrote:Yes I do use Ubuntu 13.04 now. Sadly still did not made it work. Today after restating my pc the vm's no longer work as they shoul. I can start them fine but they wont appear on screen connected to radeon and connecting via VNC leaves me with white window. Nasty stuff so still workning for solution. Who knows maybe its xen 4.2 issue and I will need to go back to xen 4.1. By the way did you try to use KVM? I did heard its faster than xen. I presonally did try to make it work with KVM but it did fail (probably insufficent knowelge ^^ ).
Sorry to hear. Please note my warning at the beginning of my tutorial regarding Xen upgrade. Have you upgraded your packages in the meantime? It turns out that the same (or similar) issue with HVM guests has appeared in Xen 4.2. Open Synaptic (or use apt-get) and try to force a previous version of Xen and the other packages, for example if you use 4.2.3 try 4.2.2 (if available).
Regarding KVM, it's very tempting. I've seen reports using kvm with Nvidia cards (other than the Quadro2000 and higher cards). Here is a kvm guide: https://bbs.archlinux.org/viewtopic.php?id=162768. kvm seems to be getting the edge over Xen, so if you are willing to compile the latest (beta) kernel and other stuff and patch when needed, this seems definitely be worth the effort.
See also this https://bbs.archlinux.org/viewtopic.php?pid=1275017#p1275017 on Xen primary passthru and booting the Windows guest straight from the hard drive.