Huawei ME909s-120 modem goes offline and disappears

[Bruno Vetter]

> Could you test with the following patch to see if the stability improves

I have asked the devs at balena.io to integrate the patch into their os image and re-tested without success.

The image they sent still uses mm version 1.10.6 so I asked for another confirmation that they really backported the patch. I also forwarded your suggestion to upgrade. I will let you know about the outcome. Meanwhile I will capture another debug log.

Thanks a lot
Bruno

Holen Sie sich Outlook für iOS<https://aka.ms/o0ukef>
________________________________
Von: Aleksander Morgado <aleksander at aleksander.es>
Gesendet: Wednesday, December 11, 2019 4:05:14 PM
An: Bruno Vetter <bruno.vetter at outlook.com>
Cc: modemmanager-devel at lists.freedesktop.org <modemmanager-devel at lists.freedesktop.org>
Betreff: Re: Huawei ME909s-120 modem goes offline and disappears

> At this point the disconnection logic has finished, but the CGACT?
> that got in the middle never gets a reply. After this, all commands we
> attempt to send to ttyUSB1 end up timing out, and after 10 consecutive
> timeouts, MM removes the modem from its logic because it cannot use
> the primary control port.
>
> Now, in this specific case, given that the connection status command
> is triggered *during* the disconnection process, I believe this could
> be caused by MM.
> I believe that we could either remove those connection checks also if
> bearer state goes to "disconnecting", or otherwise keep them removed
> only when "disconnected" but make sure they are a no-op while
> disconnecting. I think the latter would be a bit safer, as we wouldn't
> need to care for when the disconnection procedure fails.
>
> Let me prepare a patch to see if we can avoid this.
>

Could you test with the following patch to see if the stability improves?
https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.freedesktop.org%2Fmobile-broadband%2FModemManager%2Fmerge_requests%2F229&data=02%7C01%7C%7C127fb31fa9984e9c16ec08d77e4b8db3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637116735271253917&sdata=EplrI1%2BktelTy2WRVaMmFfLAIXcGGiuCb1XvoPLP9sQ%3D&reserved=0

--
Aleksander
https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Faleksander.es&data=02%7C01%7C%7C127fb31fa9984e9c16ec08d77e4b8db3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637116735271253917&sdata=jed6PR5I8t5qdRIG88LOz6ox9rBZYhsK8yEafrBwmRY%3D&reserved=0
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/modemmanager-devel/attachments/20191213/98efd357/attachment.htm>