Sierra HL7692

[Aleksander Morgado]

> > ModemManager does not know how to use the cdc-ncm ports exposed by the
> > modem, the implementation is missing.
> > IIRC we had some attempt to implement this, and I even got some HL
> > modules sent by Sierra to me, but I'm missing the devkit to use them
>
> That explains the issues I’m seeing. I am using the Linkwave PiloT board, that seems to work ok.
>
> So I guess, you’d recommend using MBIM with the Sierra HL? Do you have any idea why ModemManager detects it as Generic?
>

Yes.

>   -------------------------
>   Hardware |   manufacturer: 'Generic'
>            |          model: 'MBIM [8087:0911]'
>            |       revision: 'M2M_7160_MBIM_CAT1_WW_01.1804.'
>            |   H/W revision: 'XMM7160_V1.2_MBIM_NAND_REV_4.5'
>            |      supported: 'gsm-umts, lte'
>            |        current: 'gsm-umts, lte'
>            |   equipment id: ‘xxx’
>
> This is what I am seeing in the logs:
>
> Mar 13 11:00:29 144d32b ModemManager[2688]: [1552474829.130316] (Sierra) [wwan0] filtered by vendor/product IDs
> Mar 13 11:00:29 144d32b ModemManager[2688]: [1552474829.132989] (Sierra) [ttyACM0] filtered by vendor/product IDs
> Mar 13 11:00:29 144d32b ModemManager[2688]: [1552474829.146082] (Sierra) [cdc-wdm0] filtered by vendor/product IDs
>
> I guess, the VID:PID are not included in my version of ModemManager. Actually, looking at what’s advertised by the device, the VID:PID is 8087:0911 which conflicts with what’s documented (0807:0911). I’ll dig some more.
>

8087 is Intel's VID, and we don't have a specific plugin in MM for
devices with the Intel VID. We could extend the "xmm" plugin to do
this though.


-- 
Aleksander
https://aleksander.es