Oops -- no, that's not it. You also need to ensure dbus_daemon is started. There is an environment variable called
pkg_scripts in /etc/rc.conf.local (or /etc/rc.conf if you don't use .local). Iff that variable is not defined, you need to add it, and ensure that
dbus_daemon is included in its definition.
See the
rc.d(8) man page.