On Sun, Aug 29, 2021 at 3:31 PM Aleksander Morgado <aleksan...@aleksander.es> wrote: > > Hey Juan > > > I have a system with MM 1.16.4 (NM 1.20.4) and I'm facing some > > problems with my SIMCOM SIM7600G-H > > > > In some systems, I get a successful activation of the cdc-wdm0 device > > and the wwan0 interface comes up and in some other systems, cdc-wdm0 > > fails to be grabbed/activated and the wwan0 stays down. > > > > I'm attaching the success and failure logs. > > > > Any clues on where the issue might lie, or where to look for more > > info, would be really appreciated. > > > > The MM version you're using has a 25s timeout when checking for the > QMI support, which may not be enough for newer devices, which take a > looong time to respond in the QMI port. > > You may just need this patch > https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/commit/b7f0f2ca7c6e61fcf08786909ba0992d0de36ce6 > which was released with MM 1.16.6. > > -- > Aleksander > https://aleksander.es
Thanks Aleksander, Actually, I moved to MM 1.16.10 and I have not seen that issue since then. BR, Juan
