have you checked whether these LEDs are behind a GPIO controller
(possibly in the SoC itself), that's potentially used for other things,
too ?
They seem to be connected to the embedded controller
(\_SB.PCI0.LPC0.EC0.GGSI). I'm having trouble finding documentation on
that, though.
I've haven't got a data sheet for the i9-11900 yet, but I'm quite sure
it does have gpios and suspect they're used for those things, as well
as extra keys, etc. This is a usual approach for such mainboards.
There's several models of this laptop. Mine has a Ryzen 2700.
Oh, and have you checked whether there're also some gpio definitions
in the acpi tables ? It's relatively new but some vendors already using
it.
There's one, but that's it. I'd expect more than one pin to be necessary
here.
