qmicli always getting transaction time out

Dan Williams dcbw at redhat.com
Fri Apr 20 21:03:31 UTC 2018

On Fri, 2018-04-20 at 12:40 -0500, EMANUEL FERNANDO MONTOYA GOMEZ
> Hi,
> I am really new to this subject and just want to get MC7455 connected
> to
> cellular network and getting an IP address but I haven't been able
> I have tried several things without total success.Specially, when I
> use
> qmicli I always get * service: CID allocation failed in the CTL
> client:
> Transaction timed out*. No matter what options I try (I don't fully
> understand what each of them does, just try to follow tutorials)
> *ModemManager is not running*

Can you report 'lsusb -v -d 1199:9071'?

ModemManager appears to be using the modem in pure AT mode, which is
not expected for this device.  It should be using QMI instead, but as
you report you cannot talk to the modem with QMI.

Also, what kernel version is this, and have any patches been backported
for the cdc-wdm, qmi_wwan, or usbnet drivers?


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