Traceback (most recent call last):
  File "/usr/bin/jockey-gtk", line 390, in <module>
    sys.exit(u.run())
  File "/usr/lib/python2.6/dist-packages/jockey/ui.py", line 411, in run
    if self.check_composite():
  File "/usr/lib/python2.6/dist-packages/jockey/ui.py", line 507, in check_composite
    h_id = self.backend().check_composite()
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name :1.186 was not provided by any .service files