FCC authentication with QMI over MBIM; try 1

Andreas Fett andreas.fett at secunet.com
Mon Jun 13 08:01:40 UTC 2016


On 10/06/16 20:46, Stefan Armbruster wrote:
> On a unrelated note: my 4G signal is rather poor. Mobile phone
> typically flips back and forth between 2g and 3g. I have the feeling
> that the Sierra modem does not really fall back to 2g. The connection
> is established very fast and reproducible, I do get IP address
> assigned, but it seems that I'm only sending out packets but don't
> receive anything.
I am experiencing the same issue, also using the EM7455 (in this case in
a Lenovo T460s). ModemManager libmbim and libqmi from the qmi-over-mbim

Connect works fine, address is assigned but there is no traffic.

Is there anything I can help with to debug this further?


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