Problem with AirCard 340U on embedded Linux

Aleksander Morgado aleksander at
Tue Aug 16 14:11:05 UTC 2016

On Mon, Aug 15, 2016 at 11:41 PM, Evade Flow <evadeflow at> wrote:
> *UPDATE* A suggestion by Aleksander from this previous thread:
>   -
> seems to have solved my problem. I simply added this line to my start
> script, just before establishing the connection:
> --wda-set-data-format=802-3
> and now it works

I wonder if this is some issue with how libqmi detects that the kernel
supports changing the link-layer-protocol. What's the output of this
command when you boot the embedded board, without qmi-network being

$ qmicli -d /dev/cdc-wdm0 --get-expected-data-format


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