Modem kernel driver changes from cdc_mbim to qmi_wwan after suspend/resume?

[Aleksander Morgado]

Hey Bjørn & all,

I wonder if you have any idea why this issue is happening?
https://gitlab.freedesktop.org/mobile-broadband/ModemManager/issues/165#note_368404

We can see how the kernel driver reported as managing the device that
owns the cdc-wdm port changes from cdc_mbim (original one after boot)
to qmi_wwan (after a suspend/resume cycle). This makes ModemManager
attempt QMI probing instead of MBIM probing on the port, and that
fails, so the modem is no longer used after the suspend/resume cycle.

Any hint?

-- 
Aleksander
https://aleksander.es