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Today's Topics:
1. Re: Unsalble cellular connection (JH)
----------------------------------------------------------------------
Message: 1
Date: Thu, 15 Aug 2019 22:45:56 +1000
From: JH <[email protected]>
To: Jonas Bonn <[email protected]>
Cc: Giacinto Cifelli <[email protected]>, "[email protected]"
<[email protected]>, connman <[email protected]>
Subject: Re: Unsalble cellular connection
Message-ID:
<CAA=hcwrl0jovmwaeyp3a191qqr-cy1fyej1muuwknmraiik...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi Jonas,
On 8/14/19, Jonas Bonn <[email protected]> wrote:
>> I logged link status every 10 minutes.
>
> How? Not clear from what you posted earliest how you can tell that the
> link has gone down. The default route is set to go over WiFi so a
> generic ping isn't sufficient. What exactly are you monitoring?
I have a cron job to check LTE link IP, if the IP is gone that the
link is down. I also connect the device and monitor it by serial port
connection. I don't think that is important, let's move on.
>>
>>> Cloud messages are as good as a ping... a packet's a packet.
>>> The link is configured by connman, not ofono. ofono just publishes the
>>> address details so that connman can set it up.
>>
>> So, it is back to connman?
>
> Well, the log _seemed_ to indicate that connman does an NTP request to a
> server that isn't available and thereby decides to take the link down...
> off the top of my head I can't say whether that's something connman
> actually does so hopefully somebody else will jump in here. Did ofono
> indicate the context as still established after that?
That seems critical, every time when the link down, connman called:
connmand[213]: Time request for server 10.114.52.97 failed
(101/Network is unreachable)
Then deleted the link IP address to cause the link down:
connmand[213]: wwan0 {del} address 10.114.52.98/30 label wwan0
connmand[213]: Skipping disconnect of /ubloxqmi_0/context1, network is
connecting.
connmand[213]: ipconfig state 2 ipconfig method 1
> Seeing the issue with complete logs would be useful. I thought your
> previous logs indicated connman trying to deactivate the context when it
> took the link down, but the ofono logs didn't show any of that... what's
> going on there?
The full connman log file attached, there was no information for ofono
log files. I don't think that ofono was aware of that connman deleted
the IP address from the LTE link, I cannot understand why the connman
did it. Anyway, I'll try to debug and to generate ofono log again.
Thank you Jonas,
- jh
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