When I plug the modem I have a mobile broadband option in network menu bar, and I add new mobile broadband connection, and everything is fine. but, when I try to connect it, suddenly the Mobile broadband option in network menu bar dissapear . . so I have to unplug it and plug it again in my laptop to display the mobile broadband option. . . I connect it again, and dissapear again. . . how can I connect to my mobile broadband??
I'm using aego modem. under Ubuntu 14.04 LTS Operating system