Most of audio devices are in the AppleALC.kext, but some of the Realtek ALC295 doesn’t have the mic support. We have the speakers sound but not the microphone input. This post is to try to get the microphone to work with SST (Smart Sound Technology). With AppleALC.kext we tried all the layout-id but none has mic to work
21 (15),22 (16), 28 (1c),15 (F),13-D,77
1. We need to get the codec pins out from the machine, either use linux or clover bootloader, with clover bootloader at the menu screen, hit “F8”, it will output the codec to the EFI/Clover/misc/ folder.