Leaderboard

https://drive.google.com/drive/folders/1pRdUoEorPKj_DzYtRxYENZDhER-GhEQK?usp=sharing test this EFI if start post ioreg

Do try and disable that SSDT-ALC256 patched tab of yours. I don't think you need it, especially given that you do not appear to use CodecCommander kext. Then, there appears to be a discrepancy between your OC config and the info shown in IOReg: You need to address that... https://github.com/acidanthera/AppleALC/wiki/Supported-codecs 'pretty sure ALC256 layout id 11 (0x0B) should work perfectly.