Setting up 4G in D-Link DWM-222 (was Re: 4G USB dongles known to work on Linux)

[Aleksander Morgado]

>> >> >            |          state: 'connected'
>> >> >            |    power state: 'on'
>> >> >            |    access tech: 'lte'
>> >> >            | signal quality: '62' (recent)
>> >>
>> >> Well, that means you're connected in LTE :)
>> >
>> >
>> > That makes sense :-) I got confused by very slow connection rates.
>> > Anyway,
>> > is it expected not to connect when changing the current capabilities to
>> > lte
>> > only?
>> >
>>
>> If you change the capabilities to lte-only, it should also connect
>> correctly. Is it not the case?
>
>
> It doesn't connect. The journal has these messages repeated several times:
>
> <info>  Simple connect started...
> <info>  Simple connect state (4/8): Wait to get fully enabled
> <info>  Simple connect state (5/8): Register
> [/dev/cdc-wdm0] No transaction matched in received message
>

Oh! Could you setup ModemManager in debug mode and get us some logs?
https://www.freedesktop.org/wiki/Software/ModemManager/Debugging/

>> > I have an additional problem. I have two SIM cards from different
>> > network
>> > providers but the modem is connected to any of those without matching
>> > the
>> > correct provider. May this be due to a limitation of the modem driver
>> > which
>> > cannot read the relevant data from the SIM card? I noticed this info in
>> > the
>> > journal:
>> >
>> > ModemManager[1880]: <warn>  couldn't load Operator identifier: 'Couldn't
>> > get
>> > home network: QMI protocol error (16): 'NotProvisioned''
>> > ModemManager[1880]: <warn>  couldn't load Operator name: 'Couldn't get
>> > home
>> > network: QMI protocol error (16): 'NotProvisioned''
>> > ModemManager[1880]: <warn>  couldn't load list of Own Numbers: 'Couldn't
>> > get
>> > MSISDN: QMI protocol error (16): 'NotProvisioned''
>> >
>>
>> That looks like the info is missing in the SIM card? Which operators
>> are these again?
>
>
> I tried both with a data-only SIM from R and a standard mobile phone SIM
> from Movistar. I don't think it's related to the SIM card. Could it be a
> problem with the driver? I also noticed these lines earlier in the journal:
>
> <warn>  couldn't load IMSI: 'Couldn't get UIM IMSI: QMI protocol error (37):
> 'UimUninitialized''
> <warn>  couldn't load Operator identifier: 'Couldn't get home network: QMI
> protocol error (37): 'UimUninitialized''
> <warn>  couldn't load Operator name: 'Couldn't get home network: QMI
> protocol error (37): 'UimUninitialized''
> <warn>  couldn't load list of Own Numbers: 'Couldn't get MSISDN: QMI
> protocol error (37): 'UimUninitialized''
>

Are you only getting these when in lte-only mode?

-- 
Aleksander
https://aleksander.es