EM7455: invalid transition and device is closed errors

[Taco de Wolff]

Hi Aleksander,

Yes! The FCC authentication works and it's going into 'online' now. For
some reason earlier on the ModemManager wasn't working, but now it seems it
does. Thank you so much!

In the meantime I damaged my SIM tray holder in my T460...one problem at a
time.

Saludos cordiales,
Taco de Wolff


On Sat, Oct 3, 2020 at 9:47 AM Aleksander Morgado <aleksander at aleksander.es>
wrote:

> Hey,
>
> >
> > I'm having trouble enabling my new EM7455 card for a Thinkpad T460 with
> Arch Linux. Using qmi_setup at https://github.com/penguin2716/qmi_setup
> I'm getting the following error:
> >>
> >> error: couldn't set operating mode: QMI protocol error (60):
> 'InvalidTransition' your wwan device may be RFKilled?
> >
>
> First time I've seen that "qmi_setup" script, and not sure I like all
> the assumptions it makes. It's definitely not a "general solution" for
> all QMI modems.
>
> Your specific issue could be that the operation to get the device
> online doesn't work because it requires the "fcc authentication"
> command, try this:
>
> $ qmicli -d /dev/cdc-wdm0 -p --dms-set-fcc-authentication
> $ qmicli -d /dev/cdc-wdm0 -p --dms-set-operating-mode=online
>
> Have you thought of switching to use ModemManager instead of plain
> qmicli commands? MM would have solved all that automagically.
>
> --
> Aleksander
> https://aleksander.es
>
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