I've previously reported a bug ( https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/557449 ) which is very similar with a sierra wireless 885. The data port is ttyUSB4, but mm is trying to use ttyUSB3.
I've previously reported a bug ( https:/ /bugs.launchpad .net/ubuntu/ +source/ modemmanager/ +bug/557449 ) which is very similar with a sierra wireless 885. The data port is ttyUSB4, but mm is trying to use ttyUSB3.