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PiCore graphics

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Rich:
Hi polikuo

--- Quote from: polikuo on August 19, 2023, 10:36:32 AM --- ... Anyway, I've found a solution without knowing why and would like some insight from experts.  :)
The easy fix is, replace dtoverlay=vc4-kms-v3d with dtoverlay=vc4-fkms-v3d ...
--- End quote ---
Just a wild guess, but maybe the  f  in  vc4-fkms-v3d  stands for  framebuffer ?

Juanito:
I seem to recall it means fake or firmware kms and was the old way of doing things now superseded by fully open source kernel/mesa drivers?

Paul_123:
Yes, its firmware, and the fkms driver is old, it was developed when the kms driver was not fully integrated. 

I’m still not clear on what you are trying to do.  Are you loading Xorg3d?

polikuo:
Hi Rich

--- Quote from: Rich on August 19, 2023, 11:48:30 AM ---Just a wild guess, but maybe the  f  in  vc4-fkms-v3d  stands for  framebuffer ?

--- End quote ---
I guess that's a yes.

Hi Juanito

--- Quote from: Juanito on August 19, 2023, 01:34:06 PM ---I seem to recall it means fake or firmware kms and was the old way of doing things now superseded by fully open source kernel/mesa drivers?

--- End quote ---
A bit of google search leads me to this post
It also mentions

--- Quote ---A lot of that stuff near the top of config.txt is for the older "fkms" driver and does nothing when using Bullseye's default "kms" driver (hdmi_force_hotplug, hdmi_group, hdmi_mode, hdmi_drive...).
--- End quote ---
Gotta mess around and see what happens.
Does vc4-kms-v3d work for you ? (the newer one, without f)

Hi Paul

--- Quote from: Paul_123 on August 19, 2023, 01:46:45 PM ---I’m still not clear on what you are trying to do.  Are you loading Xorg3d?

--- End quote ---

Me neither, I was loading extensions (Xorg-3d included) when the screen turned black.
Trying to figure things out and comparing my settings between armv7 and aarch64.
Searching the the forum to see if anything turns out being helpful.
They say hardware acceleration is a great idea, so I try it out.
Still looking for ways to properly configure it and test it out to see the differences.

Juanito:

--- Quote from: polikuo on August 19, 2023, 10:00:35 PM ---Does vc4-kms-v3d work for you ?

--- End quote ---

Yes - although when booting directly into a gui it fails waiting for x more than half the time, presumably because the drivers are still loading and needs starting manually.

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