You can also build from the release version, though I'm not sure it's fully that version for everything since the build process downloads updates from the internet. https://github.com/armbian/build/releases/tag/v25.8.1 At the top of that page, you can see how many commits have been added to main since the release of v25.8.1. You can download the source code at the bottom where it says Assets.

Share your displaying configuration by running "neofetch" and post it here. If your X11 is running on top of framebuffer, instead of DRM, it wont work. I also would like to get more debug from cedrus, linux's v4l2... but at least you can add -v to mpv to get more debug You only need the ffmpeg plugins offered by the original poster of the v4l2-request thread This is tested with mpv player only. v4l2-util and -ctl are only useful for webcams and video capture devices. v4l2loopback is not involved here. I don't have it I have an orange pi zero LTS, but I havent tested it there (I would use an SPI LCD, since it doesn't have an HDMI prot)

For debian problems, do what I do: Get the cheapest raspberry Recreate the problem Ask the question in the raspberry forum Apply solution to Armbian XD

Oh, sorry, I didn't notice the non-existent 6 and read it as Helios64. Of course, my description of the boot method is not limited to Rockchip devices; it works on all for which a mainline U-Boot is available. I have used it on iMX6, LX2160A and S922X devices, but my remaining devices are all based on Rockchip. The solutions are too varied to present a turnkey solution here. However, I am sure that only a corresponding configuration for implementation is required to achieve the desired behavior, but for that, the U-Boot documentation must be consulted to decide which solution should be chosen.

Thank you for your answer. My board is not Rockchip-based, we have been generalizing the discussion for quite a while now. Well, and this is where it would get interesting but ...