Thanks for submitting this bug. Could you please show your libvirt version? (dpkg -l | grep libvirt)
What you describe sounds like the file /etc/apparmor.d/abstractions /libvirt-qemu did not get updated correctly with version 1.2.2-0ubuntu9, which should have done: [ Jamie Strandboge ] * updates for AppArmor signals and ptrace mediation (LP: #1298611) - debian/apparmor/libvirt-qemu: allow guests to receive signals from and be tracedby libvirtd (additional signal and ptrace rules come from the AppArmor base abstraction) Could you please show the contents of both /etc/apparmor.d/abstractions/libvirt-qemu and /etc/apparmor.d/libvirt/libvirt-6a3beaf2-5362-11e3-bc34-001e4f354ef5* ? ** Changed in: virt-manager (Ubuntu) Status: New => Incomplete ** Changed in: virt-manager (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1324393 Title: "Force off" fails with "Permission denied" after upgrading to 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/1324393/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs