ModemManager and Quectel RM520N-GL

[Peter Naulls]

On 3/6/23 02:40, Patrick Kosiol wrote:
> Hi Peter,
> 
> Thanks for the info.
> 
> Actually, the lsusb output was incomplete. It looks like the one attached so the 
> device is actually there. Yet, you are right, the /dev/ttyUSB device is not 
> present.
> 
> I checked the state of the usb device and it appears to be loaded with the 
> qmi_wwan driver, which seems correct:
> 
80M
> 
> Do you happen to have any other suggestion?

I did, in the bit you didn't quote - this is why good quoting is always good
practice:


"I'm not seeing the USB serial devices for your modem, i.e, /dev/ttyUSBx.  It 
may be that you need a usb_modeswtich invocation.  ModemManager won't pick it up 
until these exist."