ublox SARA does not connect

[Aleksander Morgado]

Hey

> So its been a few months, and now when we install the product in US, trying to connect to Verizon and tmobile, I face problems again.
> Modem is ublox sara r5, which works through serial port AT commands only.
> The modem seems to be connected, when issuing AT+CGDCONT , but modem manager +network manager do not go ahead to create a connection
> Attached logs
>

The modem is indeed registered as we can see the initial EPS bearer IP
address for the vzwadmin APN, but for some reason MM doesn't know
about that. I can see MM trying +CREG? and +CGREG? but they both seem
to return the reg state as idle.

Could you run +CEREG? manually in the AT port to see what it returns?

The modem is detected as a 1-port AT generic modem, and none of the
capability queries we do end up telling us it may be 4G capable (which
is why we don't try +CEREG to check)

ModemManager[573]: <info>  [1692200059.641466] [device
/sys/devices/platform/soc at 0/30800000.bus/30860000.serial] creating
modem with plugin 'generic' and '1' ports
...

ModemManager[573]: <debug> [1692200059.704189] [modem0/ttymxc0/at] -->
'AT+WS46=?<CR>'
ModemManager[573]: <debug> [1692200059.716311] [modem0/ttymxc0/at] <--
'<CR><LF>+CME ERROR: 100<CR><LF>'

-- 
Aleksander