Ubuntu
network-manager package

  1. Bug #366051
  2. Comment #3

Comment 3 for bug 366051

Revision history for this message
sunatomo (naiyu) wrote :

I have the Huawei E220 and it cause the same problem.
If udev can't detect the serial Interfaces, it can't connect ppp via NetworkManager and pppconfig (& pon).
In such timings, I have to send any ATcommand to /dev/ttyUSB1 first, and then it can understand ATcommand via /dev/ttyUSB0.

So, I think udev have to send any ATcommand to this modem's /dev/ttyUSB1 first, then detect the /dev/ttyUSB0.