macOS AppleHDA Realtek ALC Onboard Audio Solutions
Realtek onboard audio: try AppleALC.kext
See https://github.com/acidanthera/AppleALC
AppleALC.kext/toleda
Codecs: Layout (AppleALC.kext)
Layout (config.plist/Devices/Audio/Inject/1 or 2 or 3)
1 - 1/2/3/5/6 motherboard audio ports
2 - 3 motherboard audio ports, 2 in/1 out becomes 3 out/5.1 surround sound
3 - HD3000/HD4000 HDMI audio with Realtek ALC audio/Orange port is diaabled