$ service pulseaudio restart
stop: Unknown instance:
start: Rejected send message, 1 matched rules; type="method_call", sender=":1.23" (uid=1000 pid=1298 comm="start pulseaudio ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init ")