I got this error message without upgrading from lucid. I fixed the vm by using a free vnc port. For some reason the vnc port was hardcoded in the config file.
- <graphics type='vnc' port='5901' autoport='no' keymap='en-us'/> + <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/781936 Title: old xml files (from lucid) do not start under newer libvirt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/781936/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs