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Raspberry Pi Zero W Camera not working

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zharr:
I have similar problems, v4l2 does not work properly on the Pi Zero 1.3 and Pi Zero W, but works fine on Zero 2 (same image with armv6 packages).
Camera V2 works with raspistill on all boards, but "v4l2-ctl --list-devices" outputs that it cannot open /dev/video0 - because it does not exist.
Any ideas why that could be?

(Also version piCore 13.1.0, Kernel 5.10.77-piCore)

Juanito:
Do you have "dtoverlay=vc4-kms-v3d" and graphics-KERNEL loaded on the RPi0/RPi0W as well as v4l-dvb-KERNEL?

patrikg:
@Juanito
Do you have access to the wiki ?

You doing a lot to the community and answer so many questions that my suggestion to you would be that:
Isn't it better you could answer some questions to the wiki instead, because some of the questions is always the same.

So you could easily answer back to the questions with a link to the correct wiki page with the answer.
Do not reinvent the wheel every time :)

   

zharr:

--- Quote from: Juanito on November 07, 2022, 03:26:28 AM ---Do you have "dtoverlay=vc4-kms-v3d" and graphics-KERNEL loaded on the RPi0/RPi0W as well as v4l-dvb-KERNEL?

--- End quote ---
I did not have the graphics module, nor the dtoverlay, but I did have v4l-dvb-5.10.44-piCore.tcz.
I could not find the correct graphics package for my kernel (graphics-5.10.77-piCore.tcz is missing for all architectures), so I manually installed the 5.10.16 version and added the dtoverlay under an [ALL] section.
Verified that the graphics package was loaded on next boot and dtoverlay got saved.
Unfortunately, the camera was still not recognised by v4l2-ctl --list-devices (again complaining about no /dev/video0, which I assume should be set up by libv4l2 itself), but it still worked with raspistill (and vcgencmd get_camera also reports a supported and detected camera).

I should also note that on the Pi Zero 1.3 (not the Pi Zero 2), extensions load very slow and a variable amount of paths pop up after udevadm settle - timeout of 5 seconds reached, the event queue contains:.
Could range from only /sys/devices/virtual/block/loop99 and /sys/devices/virtual/block/ram0, to the full screen full of paths (including camera related stuff).

I also attempted to load the armv6 kernel on the Zero 2 to see if that would expose an incompability, but unfortunately that didn't even boot.

Thanks for your help.

Rich:
Hi zharr

--- Quote from: zharr on November 07, 2022, 08:00:23 AM --- ... I could not find the correct graphics package for my kernel (graphics-5.10.77-piCore.tcz is missing for all architectures), so I manually installed the 5.10.16 version ...
--- End quote ---
You can't mix kernel versions like that. If you're running 5.10.77-piCore kernel, you need 5.10.77-piCore modules.

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