Обновил плагин, вот лог
 PPPD is offline. Trying to start ...
Trying to switch: Can't find USB modem for switching
Trying find port:[ OK ]
Starting pppd:
Serial connection established.
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
LCP: timeout sending Config-Requests
Connection terminated.
Modem hangup
Serial connection established.
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
LCP: timeout sending Config-Requests
Connection terminated.
Modem hangup
[FAILED]
При запуске плагина модем начинает моргать через равные промежутки времени, но инета нет.