The most recent pvops kernel 2.6.32.19 allows to enable kernel modesetting (KMS) under Xen 4.0.1-rc6 on top of Ubuntu Lucid Server and Fedora 13. Actually , current setup of Xen 4.0.1&PVOPS on top of Ubuntu 10.04 Server is different from http://wiki.xen.org/xenwiki/Xen4.0 : How to install Xen 4.0 (1) and brief instructions follow bellow. Status of the problem in general along with list of video adapters been tested may be viewed at http://wiki.xensource.com/xenwiki/XenPVOPSDRM.