Drivers for cellular modems

Bjørn Mork bjorn at
Mon Apr 16 14:14:57 UTC 2018

Don't make things more complicated than necessary.  Boot Linux and it
will figure this out for you.


Pavlin Georgiev <pavlin at> writes:

> Hi,
> I have a testing machine with modem Sierra Wireless EM7455.
> Which drivers should be used:
> A) qmi_wwan
> B) cdc_mbim
> Are these drivers compatible? Can they be loaded together on a system XOR they are excluding each other?
> In the documentation from the manufacturer, it is clear that:
> The device supports the following protocols for modem communication:
>   * Qualcomm QMI interface. (Please contact your Sierra Wireless account representative for QMI interface documentation.)
>   * MBIM (Mobile Broadband Interface Model)
> Thank you for your advice.
> Pavlin
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