64x32 with Adafruit demo worked 1 time. Black bars

Hello everyone,

Today I tried to setup a P5 64x32 led screen. I tried the demo and was very happy that it worked. I then tried demo 3 to find out that it stopped working. Then i tried demo 0 and now I have these black bars on the screen.

 sudo examples-api-use/demo -D0 --led-rows=32 --led-cols=64 --led-gpio-mapping=adafruit-hat

This is the command that Im using and have used in the demo that it did work. I’ve also tried a make clean and rerunning the make command but that didnt seem to fix anything. I’m just confused why it worked once.

It looks like you have a trouble with C pin

Could you elaborate?