Hello,

Sometimes MM picks the wrong primary port. What I observed is that everything 
works if it picks cdc-wdm0. But pretty often it picks cdc-wdm1, in which case 
NetworkManager is unable to establish a data connection. Sometimes, much more 
rarely, it even picks ttyUSB0, and NM is then also unable to do anything useful 
with the modem.

Now I'm not 100% sure that this is the cause for our problems, so my first 
question: Is it plausible at all that anything other than cdc-wdm0 as a primary 
port is a problem?

If so:
- What can I provide to help solve this in code?
- Is there a way around it? (for example, a way to force MM to pick a specific 
port as primary?)

Thank you,
Karoly
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