Luke:
My desktop (AMD Threadripper based) has an HDA
interface, but no mixer.
Instead for sound output it uses a built-in USB based sound card, which
up-until last year the kernel did not recognise
(
https://bugzilla.kernel.org/show_bug.cgi?id=210783). Does your
motherboard have a similar setup?
No, its pci-connected.
Regards,
/Karl Hammar