ERROR: mbim message timeout - (using umbim on OpenWRT)

[Aleksander Morgado]

On Thu, Mar 12, 2015 at 3:18 PM, Dan Williams <dcbw at redhat.com> wrote:
> On Thu, 2015-03-12 at 13:27 +0100, Bjørn Mork wrote:
>> Aleksander Morgado <aleksander at aleksander.es> writes:
>> > On Thu, Mar 12, 2015 at 10:36 AM, Peter Gerten
>> > <peter.gerten at googlemail.com> wrote:
>> >> On Thu, Mar 12, 2015 at 5:04 PM, Aleksander Morgado
>> >> <aleksander at aleksander.es> wrote:
>> >>>
>> >>>
>> >>> umbim isn't based on libmbim, so this is not the proper place to ask.
>> >>> You should ask in the openwrt mailing list, as they are the ones who
>> >>> wrote it.
>> >>>
>> >> thanks for the info, I was not aware of that.
>> >>
>> >>>
>> >>> Anyway, maybe someone reading this mailing list may help?
>> >>>
>> >>> > All of the modem work fine on Ubuntu 14.04 with ModemManager.
>> >>>
>> >>> Well, then that's good news for libmbim :)
>> >>>
>> >> Although the ModemManager mysteriously work (I use the nm-aplet UI in
>> >> Ubuntu), I could reproduce a behavior similar to umbim with mbimcli:
>> >>
>> >> peter at x240:~$ sudo mbimcli -d /dev/cdc-wdm1 --query-device-caps
>> >> [/dev/cdc-wdm1] Device capabilities retrieved:
>> >>           Device type: 'embedded'
>> >>        Cellular class: 'gsm'
>> >>           Voice class: 'embedded'
>> >>             Sim class: 'removable'
>> >>            Data class: 'gprs, edge, umts, hsdpa, hsupa, custom'
>> >>              SMS caps: 'pdu-receive, pdu-send'
>> >>             Ctrl caps: 'reg-manual, hw-radio-switch'
>> >>          Max sessions: '8'
>> >>     Custom data class: 'HSPA+'
>> >>             Device ID: '862595020074379'
>> >>         Firmware info: '11.350.16.17.00'
>> >>         Hardware info: 'ML1ME936M'
>> >>
>> >> peter at x240:~$ sudo mbimcli -d /dev/cdc-wdm1 --query-device-caps
>> >> error: operation failed: Transaction timed out
>> >>
>> >> Again, the is difficult for me to reproduce as I can sometimes call it
>> >> several times in a row without timeout. This happens with mbimcli 1.6.0 (as
>> >> shipped with Ubuntu 14.04) as well as with mbimcli 1.13.0 which I just built
>> >> from the latest sources on the git repository.
>> >
>> > If you want to run mbimcli at the same time as ModemManager uses the
>> > MBIM port, then you need to run mbimcli with the --device-open-proxy
>> > (or short, '-p'), so that it uses the MBIM Proxy setup in libmbim to
>> > share the MBIM port (available since libmbim 1.10.0 and MM 1.4).
>>
>> But then you have to make sure that ModemManager uses the proxy too, or
>> you will experience exactly the same behaviour as described above.
>
> Good point.  git master does, but 1.4.x doesn't.  I cherry-picked that
> patch, and since MM 1.4.x already requires libmbim 1.10+ we don't need
> any additional version checking.
>
> Aleksander, if you think it's a problem to use the proxy in 1.4 by
> default, feel free to revert the cherry-pick I pushed?
>

Oh! I didn't realize about that and totally thought that the proxy was
in use already in 1.4.0 by default.

Time for a new MM 1.4.x release! :)

-- 
Aleksander
https://aleksander.es