EM7455: invalid transition and device is closed errors

[Aleksander Morgado]

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