Remove "Safe restart" prompt / OCPN crashing

[Kupofty]

Hello,

For some reason OCPN is always crashing when I try to close the window and then greets me with a "Safe Restart" prompt at the next start-up and I need to click "No" everytime.

Is there a way to remove this prompt forever and always launch OCPN in "Normal mode" ? I didn't find any settings in the opencpn.conf file or in the software..

Or any idea why it is always crashing .. ?
When I close the window (red cross), it crashes and no new settings is saved.
When I close the app (ctrl+q), new settings are saved then I need to close the window and cause it to crash otherwise it never closes.

I have the same issue with OCPN 5.10 (official) and OCPN 5.9.0 (build the github project on my PC) with Ubuntu 20.

Any help is appreciated !
Thanks

[nohal]

As you are able to build yourself, you are also able to investigate the crash using gdb

gdb opencpn

Type r and Enter

Make it crash

Type bt and Enter

Read the backtrace to see what actually made it crash and either fix it or make a proper bugreport on github or at least post the backtrace here.

[Kupofty]

Hello,

OpenCPN doesn't really "crash" on its own as I'm the one clicking on "force closing" (otherwise the window never closes) so not sure there's something to see in the backtrace report ?

When I click on the red cross to close OpenCPN, it freezes, nothing happens for a few seconds then a prompt tells me "OpenCPN is not responding" and I have the choice between two buttons (wait or force closing).

Clicking on "wait" does nothing else beside asking me again to choose between those two buttons. Clicking on "Force closing" send a SIGKILL signal which closes OpenCPN but then I'm greeted with the "safe restart" prompt at the next start-up and it's annoying to have to click "No" everytime in order to launch OpenCPN (it's supposed to start automatically when the PC is started)

Here's the report :

GNU gdb (Ubuntu 9.2-0ubuntu1~20.04.2) 9.2
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from opencpn...
(No debugging symbols found in opencpn)
(gdb) r
Starting program: /usr/bin/opencpn
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe4cee700 (LWP 2221986)]
[Thread 0x7fffe4cee700 (LWP 2221986) exited]
[New Thread 0x7fffe4cee700 (LWP 2221987)]
[Thread 0x7fffe4cee700 (LWP 2221987) exited]
[New Thread 0x7fffe4c6d700 (LWP 2221988)]
[Thread 0x7fffe4c6d700 (LWP 2221988) exited]
[New Thread 0x7fffe4c6d700 (LWP 2221989)]
[Thread 0x7fffe4c6d700 (LWP 2221989) exited]
[New Thread 0x7fffe4c6d700 (LWP 2221990)]
[Thread 0x7fffe4c6d700 (LWP 2221990) exited]
[New Thread 0x7fffe4c6d700 (LWP 2221991)]
[Thread 0x7fffe4c6d700 (LWP 2221991) exited]
[New Thread 0x7fffe4c6d700 (LWP 2221992)]
[New Thread 0x7fffdffff700 (LWP 2221993)]
[Detaching after vfork from child process 2221994]
[Detaching after vfork from child process 2221996]
[Detaching after vfork from child process 2221998]
[Detaching after vfork from child process 2222000]
[Detaching after vfork from child process 2222002]
[Detaching after vfork from child process 2222004]
[Detaching after vfork from child process 2222006]
[Detaching after vfork from child process 2222008]
[New Thread 0x7fffdf7a7700 (LWP 2222010)]
[New Thread 0x7fffdefa6700 (LWP 2222011)]
[Detaching after vfork from child process 2222016]
[Detaching after vfork from child process 2222018]
[Detaching after fork from child process 2222020]
[New Thread 0x7fffbee6f700 (LWP 2222081)]
[New Thread 0x7fffbe66e700 (LWP 2222082)]
[Thread 0x7fffbe66e700 (LWP 2222082) exited]
[New Thread 0x7fffbde6d700 (LWP 2222083)]
[Thread 0x7fffbee6f700 (LWP 2222081) exited]
[New Thread 0x7fffbd66c700 (LWP 2222084)]
[Thread 0x7fffbd66c700 (LWP 2222084) exited]
[New Thread 0x7fffbd66c700 (LWP 2222085)]
[New Thread 0x7fffbce6b700 (LWP 2222086)]
[New Thread 0x7fffaffff700 (LWP 2222087)]
[New Thread 0x7fffaf7fe700 (LWP 2222088)]
[Thread 0x7fffdf7a7700 (LWP 2222010) exited]
[Thread 0x7fffaf7fe700 (LWP 2222088) exited]
[Thread 0x7fffaffff700 (LWP 2222087) exited]
[Thread 0x7fffbce6b700 (LWP 2222086) exited]
[Thread 0x7fffbd66c700 (LWP 2222085) exited]
[Thread 0x7fffbde6d700 (LWP 2222083) exited]
[Thread 0x7fffdefa6700 (LWP 2222011) exited]
[Thread 0x7fffe4c6d700 (LWP 2221992) exited]
[Thread 0x7fffe5ceb080 (LWP 2221982) exited]

Program terminated with signal SIGKILL, Killed.
The program no longer exists.
(gdb) bt
No stack.

[bdbcat]

Kupofty...
Some plugins exhibit this behavior.
Please, as a test, disable all plugins and test shutdown again.


Thanks
Dave

[Kupofty]

bdbcat,

I should have noted that I already tried to close OpenCPN when it was started in "safe mode", where all plugins are disabled. The result was the same

[nohal]

OpenCPN did not crash at all, you killed it, so the backtrace of course shows nothing and a completely different approach is needed to possibly get some useful information.

Before killing it (but after Ctrl+Q and waiting for a while), run

pstack $(pidof opencpn)

in the terminal and read or at least post the output.

Also reading the end of the logfile after you kill it using

tail ~/.opencpn/opencpn.log

might show something useful.

[Kupofty]

The pstack $(pidof opencpn) command outputs :

20234: opencpn
(No symbols found)
0x559858e02ce8: ????

The tail ~/.opencpn/opencpn.log command outputs :

9:00:46.355 ERROR svgxml.cpp:444 File doesn't exist.
09:00:46.355 ERROR svgxml.cpp:444 File doesn't exist.
09:00:46.355 ERROR svgxml.cpp:444 File doesn't exist.
09:00:46.355 ERROR svgxml.cpp:444 File doesn't exist.
09:00:46.361 ERROR svgxml.cpp:444 File doesn't exist.
09:00:46.361 ERROR svgxml.cpp:444 File doesn't exist.
09:00:46.381 MESSAGE glChartCanvas.cpp:562 BuildFBO 3
09:00:46.383 MESSAGE glChartCanvas.cpp:1016 OpenGL-> Framebuffer OK, size = 1342
09:00:46.406 MESSAGE glChartCanvas.cpp:562 BuildFBO 3
09:00:46.407 MESSAGE glChartCanvas.cpp:1016 OpenGL-> Framebuffer OK, size = 1342