About the change on the ADL system, I guess that it did work with 6.0 and older Linux kernels, with a /sys/class/backlight/intel_backlight being present then ?
Just wondering. I'm happy to see coreboot adjusted to make the kernels heuristics work. OTOH though coreboot BIOS users really should not need to upgrade their BIOS to stop things breaking with a new kernel.
Yes, on 6.0 it works due to `intel_backlight` being available. But it works on Linux only. Backlight controls on Windows 10 do not work.
There are other issues with our ADL boards that I expect are related to the missing gfx control, like external displays being used as the default device instead of the eDP (maybe due to `_DOD` not being generated).
I've some ideas on how to change the heuristics which will hopefully fix the beginning of Intel x86_64 era laptops, but I don't think those will help on the coreboot using System76 laptops case...
I already have several fixes for problems on ADL that need to go out to users. The gfx change will be included. We will not need any kernel quirks for it.