This appears to be covered by the 77-mm-x22x-port-types.rules file in udev; but I can't quite make sense of why it fails this way. To understand this, it would be best if you could attach the udev logs:
Run 'udevadm monitor' (and optionally redirect the output to a file), then plug in the modem. You should then be able to copy all the information printed by udevadm monitor to this bug report, it should include an indication of what is happening. ** Changed in: modemmanager (Ubuntu) Status: New => Incomplete ** Changed in: modemmanager (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/819784 Title: Wrong ttyUSB chosen for wind 3g internet key (1bbb:0017) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/819784/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs