I am using the git version of libvirt. The domain file was working previously. [nikunj@dhruv ~]$ rpm -q qemu-kvm qemu-kvm-0.12.3-8.fc13.x86_64 Some more debugging suggested that qemuCapsExtractDeviceStr is returning an error. The output of the "pci-assign,?" is not returning any useful information on my system. [nikunj@dhruv ~]$ qemu-kvm -device "pci-assign,?" property "pci-assign.?" not found can't set property "?" to "on" for "pci-assign" [nikunj@dhruv ~]$ This is supposedly related to f892f5a562cbb6e5b914adced1000df20c3174d6 commit. Don't know what could be a valid fix for this tough. Regards Nikunj -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list