<<Include(Tag/NeedsExpansion)>> You could see three devices for the USB modem or card, for example :
/dev/ttyUSB0 /dev/ttyUSB1 /dev/ttyUSB2
This is caused by missing bits in the hal-info package. To detect the problems, type in a terminal the output of :
Technically, only the device with
usb.interface.number = 0
should be used by NetworkManager.