Comment 8 for bug 1227912

MNLipp workaround moved me from the previous error to this one:

Unable to complete install: 'internal error: Process exited prior to exec: libvirt: error : unable to set AppArmor profile 'libvirt-9a3f213c-b02e-45a1-8791-109f6300d200' for '/usr/bin/qemu-system-x86_64': No such file or directory
'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 91, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 1820, in do_install
    guest.start_install(meter=meter)
  File "/usr/share/virt-manager/virtinst/guest.py", line 403, in start_install
    noboot)
  File "/usr/share/virt-manager/virtinst/guest.py", line 467, in _create_guest
    dom = self.conn.createLinux(start_xml or final_xml, 0)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3398, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self)
libvirtError: internal error: Process exited prior to exec: libvirt: error : unable to set AppArmor profile 'libvirt-9a3f213c-b02e-45a1-8791-109f6300d200' for '/usr/bin/qemu-system-x86_64': No such file or directory

System details:

$> dpkg -S /usr/bin/qemu-system-x86_64
qemu-system-x86: /usr/bin/qemu-system-x86_64

$> COLUMNS=100 dpkg -l libvirt-bin|tail -1

ii libvirt-bin 1.2.8-0ubuntu1 amd64 programs for the libvirt library

$> lsb_release -a

Setting "security_driver=none" and restarting libvirt-bin service at least allowed me to continue.

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.10
Release: 14.10
Codename: utopic