Camera Module 3, Rasp PI 4, Waveshare LCD35C

1

Hi all.
When I connect the Rasp PI camera module 3 to the PI 4, libcamera-hello works fine. When I connect the Waveshare 3.5inch LCD 480x320 to the Pi as well, the LCD works, however, when I try to test the camera, I get the following;

libcamera-hello
libEGL warning: DRI2: failed to authenticate
Made X/EGL preview window
[0:04:53.500353717] [1899]  INFO Camera camera_manager.cpp:297 libcamera v0.0.5+83-bde9b04f
ERROR: *** no cameras available ***

FYI to install the LCD i did;

Ultimately I want to run opencv so I can read and decode QR codes using the camera, and therefore I would prefer to run 64bit. The LCD will end up being just a GUI.

I am a novice so any help would be appreciated.

2

Hey Boyd,

We have seen a few issues arising out of the new camera module 3’s where there are a few different issues with the camera not being found. The first step that we have used to resolve issues is the basic sudo apt-update/upgrade, but the key is to reboot the Pi straight after as it seems to make a significant difference when that occurs.

If you still have issues after that, it may be that the library for the screen is interfering with the camera libraries. In that case it may be worth trying to uninstall and reinstall the latest Libcamera library on the Pi to ensure that everything is there and lines up correctly.

If you continue to run into issues, let us know and we will have a look into what may be happening here.

Cheers,
Blayden