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[wellenvogel02]

Yes redirecting gdb is possible.
As you would not see anything maybe just invoking
gdb -ex where -ex quit /usr/lib/... /home/pi/avnav/... > some.log
would do the job.

For the SD card:
As you have the dongle you can use another one...

[ekoleponen]

Ok, my smart phone chopped the gdb command, now on my laptop it appears as you said.
OpenCPN is not running, I used it only to load the Ocharts, but it crashed a few times when poking around the maps and after that I checked AvNav and was charmed with it )

[wellenvogel02]

If we see the same problem as on my side I can build some patch - this at least would avoid the crashes (but make some lines not being drawn...).
Still try to find the root cause - it does not occur on my desktop/test system - only on the Pi (on my side 32 bit).

[ekoleponen]

Ok, here are the results

[wellenvogel02]

Ok, thanks.
Good news: Same crash that I have here...
Bad news: No solution so far - but I'm working on it.

At the end I'm quite optimistic to find the problem.

[ekoleponen]

I knew I was dealing with beta-version, so no problems ))

[wellenvogel02]

Unfortunately I guess it's not a beta issue...

[wellenvogel02]

Ok, I now created a patch for the OpenCPN plugin to address this issue.
https://www.dropbox.com/sh/60a3ipsy9...G9S2eCPma?dl=0
As you have the 64 Bit version download the libo-charts_pi.so from arm64.
Assuming you downloaded to /home/pi you need to execute:

sudo mv /usr/lib/avnav/plugins/ocharts/lib/opencpn/libo-charts_pi.so /usr/lib/avnav/plugins/ocharts/lib/opencpn/libo-charts_pi.so.ori
sudo cp /home/pi/libo-charts_pi.so /usr/lib/avnav/plugins/ocharts/lib/opencpn/libo-charts_pi.so
sudo systemctl restart avnav

This lib additionally is a debug version - so if we still get cores, we would have a chance to dig deeper into the problem.

[ekoleponen]

Did as instructed, and I think the preFill of Estonian cards went well.

However I cannot view different areas in Estonian charts as the view is locked into my current position (which is inland in Finland).

Tried to change the option "Settings/Map/lock boat mode" from "center" to "current" and "ask" without success.

So at the moment I cannot poke around the charts.

[wellenvogel02]

Just unlock the chart.
Button with the boat icon.
If green border -> chart is locked to position.
If no border -> you can freely move the chart.

Did you check for any segmentation faults?

[ekoleponen]

Thanks!

Segmentation faults keep on coming.

[wellenvogel02]

Ok, so if segmentation faults are still there it would be helpful to get and analyse the cores again.
But first we have to be sure that you really have the new library.
Could you execute an
ls -al /usr/lib/avnav/plugins/ocharts/lib/opencpn
And post the result?

Are you sure that you restarted AvNav after replacing the library?
Would be strange if we still get segfaults but everything works...

[ekoleponen]

I am sure I restarted AvNav, besides there has been couple of shutdowns and powerons after I changed the libs.

The result of the ls-command is attached.

[wellenvogel02]

Ok, thanks.
So the lib is the new one.
Now it would be really helpful to analyze a core file again.
After preparing the core writing (uncomment, change /proc/sys/kernel/core_pattern, restart avnav) you could make a change at one of the settings for o-charts (e.g. the deep water value) as this will invalidate the caches and the prefill will start over.
And then repeat the steps I described to get an info where the crash is located together with the provider logs.
Maybe you could delete all the old core files beforehand as they are rather big...

Potentially there are more problems then the one I solved. On my side there are no seg faults any more after the change.

[ekoleponen]

Ok, just to make sure I collect the files during a right time frame:

using the Finnish charts (zooming/moving around) starts the prefill of the Finnish charts ?
And that moment starts the time slice of interest ??

The Finnish charts are the ones that create the segmentation fault for sure.