[Libguestfs] virt-builder and Ubuntu 16.04 Xenial no access issue

Hello, I created an Ubuntu 16.04 Xenial guest using virt-builder(1) with # virt-builder ubuntu-16.04 -o /var/lib/libvirt/images/ubuntu-16.04.qcow2 --size 10G --format qcow2 --firstboot-command 'dpkg-reconfigure openssh-server' --arch x86_64 And imported it to libvirt with # virt-install --import --name ubuntu-xenial --ram 2048 --disk path=/var/lib/libvirt/images/ubuntu-16.04.qcow2,format=qcow2 --os-variant fedora23 --graphics none These successfully create the Ubuntu guest and import it as well. But - when I tried to access it using 'virsh console', it connects and shows a blank screen. No interaction whatsoever. - When I tried to access it via ssh, it did not accept the root password that virt-builder had displayed before exiting. - I tried to reset root user password with virt-customize(1), but even that did not help. In short, we have an Ubuntu guest that is not accessible anyhow. I've reserved a beaker machine and have installed Ubuntu guest as above. $ ssh root(a)ibm-x3550m4-7.gsslab.rdu2.redhat.com + r3dhatd0tc0m Please feel free to have a look at it. Thank you. -- - P J P 47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F