P3 64x64 matrix (P3-32S-HL1.2) missing red on second half of panel about rpi-rgb-led-matrix HOT 6 OPEN

So I tried it with a Pi1 model B+ which I had still laying around and it seems to work with that (except some crazy slowdown when I address all 6 panels, which is expected due to the performance of the system I guess), is this some strange behaviour of the Pi4 or is there a GPIO broken on mine?

If so can I remap the broken GPIO somehow? (and how do I identify it?)

PS:
I use respbian lite on both, 32bit on the Pi1, 64bit on the Pi4 and I followed the troubleshooting steps (disableing audio driver and uninstalling the packages mentioned there) on both PIs

from rpi-rgb-led-matrix.

Greetings,

You have only ONE unit of this panel? Have another one like 32x32?

Also, change this:

sudo examples-api-use/demo --led-rows=64 --led-cols=64 --led-parallel=1 --led-chain=1 --led-brightness=30 --led-rgb-sequence=RBG --led-limit-refresh=60 -D4

to

sudo examples-api-use/demo --led-rows=64 --led-cols=64 -D4

from rpi-rgb-led-matrix.

Hi,
thanks for your quick reply

You have only ONE unit of this panel? Have another one like 32x32?

I have only 6 of the same type of panel, they all do the same but allso all work with the other Raspberry Pi (as mentioned) for some reason

sudo examples-api-use/demo --led-rows=64 --led-cols=64 -D4

That's what I started with when trying the panels out, but has the exact same behaviour.
(Well, colors are wrong cause my panels are RBG and not RGB but red is not working on the one half with both configurations, so it must be an addressing issue or something similar)

Results with the Pi1 as a driver:

And with the Pi4 (exact same command):

any other ideas what could cause this strange bahviour with the Pi4?

from rpi-rgb-led-matrix.

ok

add in Rpi4 the led-gpio-slowdown option

now:

sudo examples-api-use/demo --led-rows=64 --led-cols=64 --led-gpio-slowdown=4 -D4

test, between 2-4 (even 5)

read this

from rpi-rgb-led-matrix.

That option dosn't help, sadly

from rpi-rgb-led-matrix.

With the RPi 4, are You using the SAME EXACT connections than the used with Rpi 1? U are using THE SAME adapter, cabling for both? Show pictures of BOTH

from rpi-rgb-led-matrix.