Hi again, seems i was to early with my excitement - after another DomU Reboot the Performance is again degraded , even with the FirePro Driver :( After a cold boot i get about 3000 points in a 720p Benchmark (with a tool called "Furmark"), after a DomU reboot it gets down to 500 points... So - no real enhancement here even with the FirePro Driver Greetings Tobias Am Donnerstag, 23. Februar 2012, 01:39:08 schrieb ray@aarden.us:> After reading many posts on GPU pass through failing on reboot of the domU, >I questioned AMD and they responded with: > >This is the known and documented issue with hypervisor - Resolved issues >(release notes) with driver 8.83.5.4 and above - May see system hang on >restart with some hypervisors. Consider using a more recent firepro driver at >support.amd.com. > > >ray