Hi all, This used to work on libvirt-0.8.7: <console type='pty'> <target type='virtio'/> </console> Using the same configuration with libvirt-0.8.8: [root@ev004 ~]# virsh create /data/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355.xml error: Failed to create domain from /data/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355.xml error: internal error no assigned pty for device console0 I'm using qemu-kvm-0.14.0-0.1.201102107aa8c46. Here's the log from starting a guest with 0.8.7: LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.14 -cpu core2duo,+lahf_lm,+popcnt,+sse4.2,+sse4.1,+cx16,-monitor,-vme -enable-kvm -m 512 -smp 2,sockets=2,cores=1,threads=1 -name 4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355 -uuid 4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355 -nodefconfig -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355.monitor,server,nowait -mon chardev=monitor,mode=control -rtc base=utc -boot c -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/dev/vgdata/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355-root,if=none,id=drive-virtio-disk0,boot=on,format=raw,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0 -drive file=/dev/vgdata/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355-swap,if=none,id=drive-virtio-disk1,format=raw,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x7,drive=drive-virtio-disk1,id=virtio-disk1 -netdev tap,fd=64,id=hostnet0,vhost=on,vhostfd=65 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:16:3e:50:a4:55,bus=pci.0,addr=0x3 -netdev tap,fd=66,id=hostnet1,vhost=on,vhostfd=67 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=00:16:3e:71:c1:49,bus=pci.0,addr=0x4 -chardev pty,id=console0 -device virtconsole,chardev=console0 -usb -device usb-tablet,id=input0 -vnc 0.0.0.0:1,password -vga std char device redirected to /dev/pts/14 And the same guest with 0.8.8: LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.14 -cpu core2duo,+lahf_lm,+popcnt,+sse4.2,+sse4.1,+cx16,-monitor,-vme -enable-kvm -m 512 -smp 2,sockets=2,cores=1,threads=1 -name 4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355 -uuid 4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -boot c -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/dev/vgdata/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355-root,if=none,id=drive-virtio-disk0,boot=on,format=raw,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0 -drive file=/dev/vgdata/4d5d8a24-bb70-4eff-b1b5-3d8e5bd5c355-swap,if=none,id=drive-virtio-disk1,format=raw,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x7,drive=drive-virtio-disk1,id=virtio-disk1 -netdev tap,fd=33,id=hostnet0,vhost=on,vhostfd=34 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:16:3e:50:a4:55,bus=pci.0,addr=0x3 -netdev tap,fd=35,id=hostnet1,vhost=on,vhostfd=36 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=00:16:3e:71:c1:49,bus=pci.0,addr=0x4 -chardev pty,id=charconsole0 -device virtconsole,chardev=charconsole0,id=console0 -usb -device usb-tablet,id=input0 -vnc 0.0.0.0:1,password -vga std char device redirected to /dev/pts/14 Kind regards, Ruben Kerkhof