[Voyage-linux] Connectivity problem via 3G USB modems

[Konstantinos Birkos]

Once again, I am using the mailing list for an issue regarding 
connectivity through 3G USB modems.

When I plug my ZTE MF110 modem directly to my board (an Alix 3D3), a 
/dev/gsmmodem is automatically created and I can use it in my connection 
configuration file to connect successfully.
However, when I plug it in a USB hub, the /dev/gsmmodem is not created 
and I cannot connect via any of the /dev/ttyUSB* devices that are created.

I have to mention that the problem appeared after I had used usbserial 
to have my ZTE modem plus  a Huawei e353 modem recognized as serial 
devices. Actually I tried to use usbserial because no devices were 
created when I plugged the Huawei modem despite the fact that it was 
successfully mode-switched.

Any hint?
Thank you in advance,
Kostas