robopro programs do not run simtimes in the FT GUI

[hypnotoad]

it is reported that some rpp programs do not run in offline mode (online is working): https://forum.ftcommunity.de/viewtopic.php?f=33&t=8086&p=62953#p62953.

[hypnotoad]

Working: test2.rpp.zip

[uffi63]

The RoboPro program FTS.rpp below is only working before FT GUI is left. After FT GUI was left and restarted or after a new boot of the CFW and start of FT GUI the program cannot be executed anymore correctly (corrected version July 24th):

FTS.zip

In case another RoboPro Program is selected, loaded and executed (after new start of FT GUI) this works perfectly and afterwords also FTS.rpp is executed properly again.

[hypnotoad]

I guess this will be a difficult problem. I could reproduce the problem with the following commands:

ssh txt
su -
pgrep xinit | xargs kill
chroot /rom/ /bin/su - ROBOPro -c "strace -f -e open ./TxtControlMain /dev/ttyO2 65000"

To stop the TxtControlMain, one can use another terminal (and then use the last above command to start it again):

su -
pgrep -u ROBOPro | xargs kill -9

When the file is loaded from flash, there is a segmentation fault.

The strace log indicates it is sent to a thread which does something with the sound system (1539 in nok.txt and 1573 in ok.txt. Permissions of /dev/video0 and the /dev/snd files seem all ok.

However, I learned to be carful to focus on particular threads. Another idea is that it crashes in the video thread between "status A" and "status B".

[hypnotoad]

test2.rpp (which did not crash) does not mention video initialization: test2.txt

[hypnotoad]

I would continue to test which robopro component causes the behaviour. When I add a camera to test2.rpp, it still works
test3.rpp.zip. I don't see anything special in the log files:
test3.txt