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Troubleshooting • Re: How to set RGB full (0-255) on Pi 5?

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Where are you seeing the RGB not at full 8 bits (0-255) per channel?

If it is the frame buffer, then yes this is RGB565 (16 bit)

From viewtopic.php?p=2223165#p2223165
The /dev/fb0 that you see is the kernel DRM framework emulating an fbdev framebuffer device, and that is restricted in the fbset commands it will allow you to use.

/dev/dri nodes are the kernel DRM subsystem interface, and is the better approach. DRM/KMS allows you full access to the display pipeline, so you can add multiple planes in varying formats to be composed your choice of display devices.
See this post about setting the frame buffer bit depth.

viewtopic.php?t=361698

If you are talking about the Desktop, then this it 32 bit RGBX888 using Wayland. Not sure about X11, but suspect it is also 32 bit.

Statistics: Posted by AndyD — Tue Aug 20, 2024 8:58 pm



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