libmbim 1.24.0 slowing down MM startup

[Amol Lad]

Hi Aleksander,

I followed your steps and mbim-proxy seg faults when MM tries to enable QMI indications over MBIM. This is just a heads-up just in case something clicks in your mind. I will try to get you a crash dump.

Amol

-----Original Message-----
From: Aleksander Morgado <aleksander at aleksander.es> 
Sent: Tuesday, 7 July 2020 6:32 PM
To: Amol Lad <Amol.Lad at 4rf.com>
Cc: ModemManager (development) <modemmanager-devel at lists.freedesktop.org>
Subject: Re: libmbim 1.24.0 slowing down MM startup

Hey,

>
> I'm testing 1.14.0 and finding that libmbim has significantly slowed down MM startup. I'm using EM7565 in MBIM mode. Please see below snippets from log which highlight the delay. As you can see "couldn't load carrier config; couldn't load SUPL; assistance data" are causing this slowness.
>

This looks like QMI over MBIM indications not working properly, how strange.

Could you retry debug logging but also including mbim-proxy logs? E.g.:

// stop ModemManager and make sure mbim-proxy is not running $ sudo /usr/libexec/mbim-proxy --verbose --no-exit // in another terminal, start ModemManager in debug mode

--
Aleksander
https://aleksander.es