carmine[~]$ nm-applet --sm-disable

** (nm-applet:2012): WARNING **: get_all_cb: couldn't retrieve system settings properties: (2) The name org.freedesktop.NetworkManagerSystemSettings was not provided by any .service files.

** (nm-applet:2012): WARNING **: fetch_connections_done: error fetching system connections: (2) The name org.freedesktop.NetworkManagerSystemSettings was not provided by any .service files.