Since 12.04 I run into several troubles with Dongle Modems. My Issue here is the following. I uses gammu to send and receive SMS. All works fine until NetworkManager get access to the Dongle. A simple
nmcli nm wwan on
and after this a
nmcli nm wwan off
and gammu receive no SMS anymore. The only way is to replug the dongle.
Any suggestions to fix it?