Problem with picochess 4.2.3 after upgrades

[Henri]

Hi Johan and others,

After sudo apt update & upgrade version 4.2.3 and reboot I get a white screen with 'The site can't be reached 127.0.0.1 on my Pi4 7 inch touchscreen

systemctl status picochess output:' 

picochess.service - PicoChess Chess Program
     Loaded: loaded (/etc/systemd/system/picochess.service; enabled; preset: enabled)
     Active: failed (Result: exit-code) since Mon 2026-05-18 09:41:10 CDT; 3min 48s ago
   Duration: 13.218s
 Invocation: 5c72db1f4fe948ae8086855b9ca8ad29
    Process: 1303 ExecStart=/opt/picochess/venv/bin/python3 /opt/picochess/picochess.py (code=exited, status=1/FAILURE)
   Main PID: 1303 (code=exited, status=1/FAILURE)
        CPU: 4.458s

mei 18 09:40:57 picochess systemd[1]: Started picochess.service - PicoChess Chess Program.
mei 18 09:41:10 picochess systemd[1]: picochess.service: Main process exited, code=exited, status=1/FAILURE
mei 18 09:41:10 picochess systemd[1]: picochess.service: Failed with result 'exit-code'.
mei 18 09:41:10 picochess systemd[1]: picochess.service: Consumed 4.458s CPU time.

What's  happening?

Henri

P.S. I'm still using an older version of Picochess for 'obvious' reasons

[Randy Reade]

Hi Henri, 

Python was updated recently. See this post for the command to run:

https://groups.google.com/g/picochess/c/u9er3ae6eQE/m/Mr6NnA47AQAJ

Randy

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[Henri]

Thanks Randy for that quick reply. As usual I did not check the latest posts. The two solutions you mentioned are beyond my knowledge, I tried to change 'picochess.py' and 'kiosk.py' but could not find port 80. I replaced these files with the ones in the latest master branch, but this did not work either. I will now get back to the 4.2.3 image I have without updating it.

I won't use the 4.3.1 version because I still can not read some sections of the desktop properly on my 7 inch touchscreen. Will make a separate post about that soon.

Henri  

Op maandag 18 mei 2026 om 17:03:43 UTC+2 schreef RandyR:

[Johan Sjöblom]

I think Randy meant this command:

The fix is to either run the 'sudo install-picochess.sh pico' command or the command suggested in the ERROR 'sudo setcap 'cap_net_bind_service=+ep' $(readlink -f $(which python3))'.

And as you don't want to run install-picochess.sh which updates to the latest picochess you need to run the second command: sudo setcap 'cap_net_bind_service=+ep' $(readlink -f $(which python3))

I would not recommend replacing, editing or moving around any python files as they change heavily all the time. Up until now the rule has been that if you run sudo apt upgrade you do need to run install-picochess.sh command, and its faster with the parameter pico. If I would to create a branch for Antonios special version you could actually run install-picochess inside it as picochess would only update to the latest of that branch, but I need to get the code for it in order to do so.

And yes, please let us know what we still need to fix in the latest version. The new 3x3 tile system menu is a quite much larger menu now as of the 4.3.1 latest release in the weekend. But do let us know whats stopping you from upgrading. Maybe we can fix it.

-- Johan

[Henri]

Randy already contacted me via PM and I am very thankful for that, because I blundered as usual. All is well for now. This evening I will get back at my annoyance with the layout of version 4.3.1 on 7' touch screen. Brace yourself! :)

Henri

Op maandag 18 mei 2026 om 19:45:12 UTC+2 schreef messi...@gmail.com:

[Johan Sjöblom]

Please fire away. And do mention what resolution you have on your 7", it makes it easier to test. Dirk had some comments that you can read here, I believe he is running a 7" with resolution 1024x600
https://groups.google.com/g/picochess/c/4xyBk2fw_TY/m/BKA4hbhyAQAJ