I did managed to reproduce this on arale ( vivid-proposed #165 ) with the recent version of NM which fixes bug #1418077.
'nmcli d' shows the modem as disconnected. list-modems shows the ConnectionManager interface both powered and attached per Alfonso's original description. The modem is registered to a carrier using UMTS, and list-contexts shows no active contexts. ** Changed in: network-manager (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1445080 Title: Cellular data not activated after exiting flight mode To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1445080/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs