AppleALC VS Legacy-Kexts

Conexant CX20724 ISST Audio - AppleALC, , layout ID 13

Use linux to find out your audio codec (ALC...) and use this to narrow down the layout ids you could use. Try all of them and see which one works. Good luck!

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Sound: I use an USB sound card so this is not a big deal for me but the onboard sound does not work. I tried AppleALC.kext together with any of the layout ids for the ALC897 from this list but nada. I also very rarely noticed some stuttering on the USB speakers. Not sure what this was about.

Headphone Port (AppleALC)

For audio you will need the REaltek audio kext. And use the appropriate layout id in boot arg for it to work with ALC1220. https://github.com/acidanthera/AppleALC/releases

There was a bug with the first release of AppleALC v1.7.3 today that caused a crash at boot. A corrected build of 1.7.3 was posted later today that fixed that and everything is now working fine for me.

I also edited the boot-args under NVRAM in the config.plist where I tested all of the id's (layout 12, 15, 18, 28, 32, 55, 59) as found in the supported codes table on github (https://github.com/acidanthera/AppleALC/wiki/Supported-codecs)

Not sure if This is what you're looking for, or not.. I was going to follow up on your other post today. I think the Dock I have is broken, I wasn't able to get any Audio working on it at all. Tried an X230T and a T530, no sound in the dock in any OS.

Try adding SATA-unsupported https://github.com/khronokernel/Legacy-Kexts/blob/master/Injectors/Zip/SATA-unsupported.kext.zip

I would guess SATAUnsupported.kext, but you should check here and make sure you've disabled anything unsupported, such as IRRT, hardware, etc. Again, I have no idea what your hardware and OC configs look like. Maybe start fresh, and open a new thread? You mentioned using the same files for your Clover and OC configs, and can personally tell you this rarely works right.

SATA-unsupported

For Catalina, You should use this kext instead SATA-Unsupported(opens new window)

ATAPortInjector

I took a look at your EFI, and I don't see any obvious errors in the config.plist. Concerning the ACPI, I don't think a valid EC is required in macOS prior to Catalina 10.15; thus, SSDT-EC is unnecessary. Concerning the Drivers, I don't think Ps2KeyboardDxe is required. Also, why use VBoxHfs-32 instead of HfsPlus32? I am curious as to where you got most of your kexts; USBInjectAll only works on El Capitan 10.11 and above, and I don't think IOATAFamily nor SATA-unsupported are required for your laptop; does your laptop even support AHCI or SATA?. AHCIPortInjector and VoodooHDA, I'm not sure about (for the latter, I think you should be using VoodooHDA-FAT). The others look fine, though.

It's weird that Kalyway only booted when bootstrapped through OpenCore. I'll have to take a look at what kexts and such it's using. In the meantime, maybe try recreating an OpenCore install USB following the above guide and incorporating some of these kexts along with a proper custom kernel (try the one from JaS 10.4.7, as per this page, combined with the previously mentioned Mac OS X Tiger Server 10.4.7 Universal)?