Interfacing (DSI, CSI, I2C, etc.) • 3.5 inch Elegoo Display DRM not working (kmscube no image)

Hello

Absolute beginner here.
I wanted to try Avalonia UI with dotnet and a 3.5 inch Elegoo display.
i installed the rpi 64 bit lite image and I followed this tutorial:
https://docs.avaloniaui.net/docs/guides ... te-via-drm

after "sudo kmscube" i get the following output but no cube...

at start it failed with:
drmGetDevices2 failed: No such file or directory
could not open drm device
failed to initalize DRM

after that i enabled in raspi-config > Advanced Options > GL Driver > GL (FULL KMS)
and then it said : no connector connected

after some google usage i changed my settings.txt from
dtoverlay=vc4-kms-v3d
to
dtoverlay=vc4-fkms-v3d

then i got some cmd fps output but no image....

then after some google again i changed it to:
dtoverlay=piscreen,drm

which leads to the beginning error: drmGetDevices2 failed: .....

Maybe someone could please tell whats wrong here??
Thanks for any help

Statistics: Posted by lehrbua — Mon Mar 25, 2024 8:30 pm — Replies 0 — Views 9

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