AC3 5.1 Digital Surround Sound - Which Package, Script, or Driver enables this Functionality?

[BluishHumility]

I still would guess the kernel. I’m not sure why you don’t want to hear that, but that is where most driver support is added.

@TOGLK

I’ve had access to this feature since 2020, WAY before Kernel 6.0 even was a thing.

So it isn’t the upgrades that you’ve shared a link to as they were added MUCH much later on.

So that specific kernel maintenance event was not the one where these drivers were added. It was probably a different one.

@TOGLK

It may be the Kernel, but then in which case EndeavourOS and Manjaro KDE must be using the same identical Kernel

No, most kernels have a lot of modules in common without being identical. I could install twenty different kernels on my laptop and I’d bet on most of them all the hardware would work.

@TOGLK

I’m pretty sure this is a Arch Linux feature at this stage rather than a EndeavourOS or Manjaro Linux feature.

Did you actually try Arch? If it works on a base Arch install then it’s very likely provided by the kernel; Arch has essentially nothing installed off the bat.