modem manager starts too early

[Giacinto Cifelli]

Hi Aleksander,

I couldn't take debug logs on the system that shows the issue, but
indeed I saw that MM waits 1s after each port is discovered: largely
enough.
So I am investigating more on the kernel driver or device bios direction.

Thank you for your help!

Kind Regards,
Giacinto

On Fri, Nov 29, 2024 at 6:17 PM Aleksander Morgado
<aleksander.morgado at gmail.com> wrote:
>
> Hey
>
> >
> > I have an issue with MM startup.
> > It seems that it starts communicating with the modem in the middle of
> > the USB enumeration.
> > My modem, ALAS5, has 4 cdc-acm ports and 1 cdc-mbim interface
> > (including a /dev/cdc-wdmX port).
> > Sometimes MM starts sending AT commands when only 2 ports are detected.
> > It is a question of miiliseconds, maybe just of the cpu schedule.
> > Ofono sets a guardtime of 1 second from the time the first device of
> > the USB enumeration is detected.
> > Would it be possible to have a similar mechanism in MM?  Or is there
> > already something?
> >
>
> Can you please share a debug log? MM definitely waits more than a few
> seconds before poking ports.