AW: Set allowed mode to 2G, 3G, 4G not working

Tue Nov 19 09:51:57 UTC 2019

I am experiencing similar issues when trying to set allowed mode to all modes, and preferred to "none in particular" :) .
Simply doesn't work - even with a success message then settings remain so that preferred mode looks to be 4G. Would like very much to solve this.

Enrico

On Tue, 19 Nov 2019, Stelling2 Carsten wrote:

> Date: Tue, 19 Nov 2019 10:10:44
> From: Stelling2 Carsten <Carsten.Stelling2 at goerlitz.com>
> To: "modemmanager-devel at lists.freedesktop.org"
>     <modemmanager-devel at lists.freedesktop.org>,
>     "Daniele Palmas (dnlplm at gmail.com)" <dnlplm at gmail.com>
> Subject: AW: Set allowed mode to 2G, 3G, 4G not working
> 
> Hi,
>
> I've just updated MM from 1.10.0 to 1.12.0 with the result, that my application fails when setting the mode ('2G|4G') for Telit LE910-EU1. It also fails when using mmcli.
> My version 1.10.0 contains Daniele's patches mentioned here https://lists.freedesktop.org/archives/modemmanager-devel/2019-February/007044.html and in following messages.
>
> I assume, that Daniele's patches didn't go mainline.
>
> Daniele, can you send a merge request, containing your patches for the master branch?
> I'll test them as soon as possible with Telit LE910-EU1 and give you feedback, such that this feature can be released.
>
> Thank you for your help.
>
> Carsten
>
> -----Ursprüngliche Nachricht-----
> Von: ModemManager-devel [mailto:modemmanager-devel-bounces at lists.freedesktop.org] Im Auftrag von Stelling2 Carsten
> Gesendet: Mittwoch, 27. Februar 2019 10:16
> An: Daniele Palmas
> Cc: modemmanager-devel at lists.freedesktop.org; Reinhard Speyerer; Aleksander Morgado
> Betreff: AW: Set allowed mode to 2G, 3G, 4G not working
>
> Hi Daniele,
>
> Thank you. Yes, I'll give it a try tomorrow.
>
> Following patches from your commits should be applied to MM 1.10.0
>
> 4089726c1fbdc90ecec8737f9ea287784708ca7f
> 90cb911437538d5b6bd681aa1d7e1be2e1700227
>
> Is this right?
>
> Best regards,
>
> Carsten
>
> -----Ursprüngliche Nachricht-----
> Von: Daniele Palmas [mailto:dnlplm at gmail.com]
> Gesendet: Dienstag, 26. Februar 2019 14:59
> An: Stelling2 Carsten
> Cc: Aleksander Morgado; Reinhard Speyerer; modemmanager-devel at lists.freedesktop.org
> Betreff: Re: Set allowed mode to 2G, 3G, 4G not working
>
> Hi Carsten,
>
> Il giorno ven 22 feb 2019 alle ore 12:12 Stelling2 Carsten
> <Carsten.Stelling2 at goerlitz.com> ha scritto:
>>
>> Hi,
>>
>> I must correct me, modem type is LE910-EU1 as Reinhard assumed. Sorry for this confusion.
>> As a workaround for testing, we send AT+WS46 commands via D-Bus, but that seems possible only, if MM runs in debug mode.
>> If we need this feature for production in the future, I understand that we can add it to the Telit plugin.
>
> at the following link
>
> https://gitlab.freedesktop.org/dnlplm/ModemManager.git
>
> you can find a fork with two additional commits that should implement
> what needed.
>
> Before sending to Aleksander a merge request would you like to give it a try?
>
> Regards,
> Daniele
>
>> I'd be very happy, if you can support me during implementation at a later point in time.
>>
>> Thank you Aleksander and Reinhard for your support.
>>
>> Carsten
>>
>> -----Ursprüngliche Nachricht-----
>> Von: Aleksander Morgado [mailto:aleksander at aleksander.es]
>> Gesendet: Freitag, 22. Februar 2019 09:59
>> An: Reinhard Speyerer
>> Cc: modemmanager-devel at lists.freedesktop.org; Stelling2 Carsten
>> Betreff: Re: Set allowed mode to 2G, 3G, 4G not working
>>
>>>>> Within the debug output I found the following line
>>>>> ModemManager[623]: <debug> [1550762368.321591] MBIM-powered Telit modem found...
>>>>> which points out, that calling
>>>>> if (mm_port_probe_list_is_xmm (probes))
>>>>> did not find the XMM support.
>>>>
>>>> It didn't find it, because the XACT=? check failed:
>>>> ModemManager[623]: <debug> [1550762359.960165] (ttyACM0): --> 'AT+XACT=?<CR>'
>>>> ModemManager[623]: <debug> [1550762360.882668] (ttyACM0): <--
>>>> '<CR><LF>ERROR<CR><LF>'
>>>>
>>>> So I assume the XMM support that we have in the xmm plugin isn't ready
>>>> to handle this specific device.
>>>>
>>>> The inability to switch modes in this device is not a bug, it's just
>>>> not implemented I'm afraid.
>>>
>>> Hi Aleksander,
>>>
>>> the Telit-preferred way seems to be to handle this with AT+WS46.
>>> I haven't checked the code in detail but based on the AT+WS46
>>> references in the Telit plugin I would have expected for
>>> ModemManager to already use it.
>>>
>>
>> If the modem is managed with MBIM, the generic MBIM implementation is
>> used for the Telit modem, so no AT+WS46 based mode switching will be
>> done. For this kind of cases, where we have MBIM for generic control
>> plus AT for other features, we would need to have a
>> "MMBroadbandModemMbimTelit" implementation that inherits from
>> MMBroadbandModemMbim but then shares features with the Telit-specific
>> AT modem object. So, it's totally possible to do this, but needs to be
>> done.
>>
>> --
>> Aleksander
>> https://aleksander.es
>>
>>
>> _______________________________________________
>> ModemManager-devel mailing list
>> ModemManager-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
>
>
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