Configuring CMA memory and device access so an Arducam OWLSight OV64A40 camera works with libcamera inside a Docker container on BalenaOS running on Raspberry Pi.

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I’m trying to use an Arducam Owlsight OV64A40 (64 MP) camera with libcamera inside a Docker container on BalenaOS running on a Raspberry Pi 5.

When I try to capture, I get the error:

libcamera: ERROR No buffers available for capture
I already:

  • Enabled the overlay with dtoverlay=ov64a40
  • Tried increasing CMA memory (cma=512M in /boot/config.txt), but when I set CMA too high the camera stops responding inside the container
  • Declared my service in docker-compose.yml with privileged: true, devices: - “/dev:/dev”, and io.balena.features.camera: ‘1’
  • Installed libcamera-dev and rpicam-apps in my Dockerfile (based on balenalib/raspberrypi5-debian:bookworm-run)

What is the proper way to configure CMA memory and device access so that libcamera inside Docker/Balena can use the camera without hitting the “no buffers available” error?

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Have you found a workaround for this problem? I have the same devices as you, but I can’t find a way to make the container detect the camera