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.
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.