Hi Alex, thanks for your answer. Do you happen to know someone who might be able to judge whether or not the radeon driver could be patched to support passthrough? Also, could you please point me to the fixes to i915 you mentioned? I think I might write to the radeon list to see whether they have ideas how to tackle this issue, and I assume it may help them if they know what fixed VGA arbitration on Haswell. Thanks again! -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html