Keyboard computers (400, 500, 500+) • Pi 500plus keyboard issue.

Hello,
I have a pi500plus and there seems to be a rather confusing issue with it's keyboard.

The Pi 500+ (us keyboard option) with the latest recommended OS installed works fine with an external usb keyboard but when using the integrated keyboard the [ key and the ' key do not register correctly, outputting a string of 6 other keys. The other keys seem to be ok.

I have tried all the reset options that I could find on the Raspberry pi website and updated and upgraded, even re-installed the operating system from network. The issue has persisted through all of these attempts. I have looked but not managed to find anything on your portal that might suggest a solution.

The [ key registers as: <tab>qwert
And the ' key registers as: <capslock>asdfg

I have also tried:
sudo rpi-keyboard-fw-update
But to no avail.

As the string of 6 incorrect keycodes are on the same row as the key that was pressed, it seems like it might be a hardware fault linked to the keyboard matrix - but I'm guessing

The processor board does not seem to be affected, as it works fine with a separate usb keyboard.
I have attached a screenshot of the output.
Any help would be much appreciated.

Regards,
Chris

Statistics: Posted by ibstock72 — Mon Jan 19, 2026 4:49 pm — Replies 1 — Views 45

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