ANN: ModemManager 1.18.4 released

Aleksander Morgado aleksander at
Fri Dec 3 14:52:05 UTC 2021


> >> However, and by all means convince me otherwise, I could still see
> >> the fall though case to PPP happening when things are not quite ready
> >> with the USB stack, QMI driver, etc.  And that's a real problem for me.
> >
> > Here we're relying on two things: the kernel exposes all ports
> > (control and data) of a given single device in a certain amount of
> > time; plus, the modem makes those exposed ports functional in a
> > certain amount of time. If for any reason those things go wrong, the
> > MM probing will fail.
> No argument here. I understand that timeouts must happen and things
> take different amounts of time.
> However, for my setup, two things are critical - one, that it keeps
> trying indefinitely. Hence my suggested OpenWrt patches earlier
> this year. I don't know if those were integrated or not; they
> were met with some derision at the time.

Do you have links to those patches?

> And two, that we never, ever try to use PPP.  To that end,
> I may need to fashion a patch to make this so - maybe just a runtime
> option to stop it being used. Actually removing it from the build is
> more work than I care to take on.

You can always ID_MM_PORT_IGNORE the TTYs :D


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