Thanks for reporting this issue. When you encounter this issue, please can you try the following and see if the issue still exists? $ sudo service libvirt-bin restart
(Suspected to be a known and fixed issue upstream[0], but confirmation would help. Thanks) [0] https://bugzilla.redhat.com/show_bug.cgi?id=660402 Please do report back, as your feedback will be very useful. Thanks! ** Bug watch added: Red Hat Bugzilla #660402 https://bugzilla.redhat.com/show_bug.cgi?id=660402 ** Changed in: libvirt (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in Ubuntu. https://bugs.launchpad.net/bugs/796216 Title: failed to create\start vm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/796216/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs