<< Solved >> ALC1220 not working on ASRock Z490 Phantom Gaming ITX/ac

[papadiche]

Followed the Opencore guide, currently using alcid=1 under layout-id (within the PCI entries portion of config.plist).

Using an ASRock Z490 Phantom Gaming ITX/ac. Has the same ALC1220 found on the Z390 Phantom Gaming ITX/ac and found on many other boards. Audio over DisplayPort, HDMI, and USB is flawless. Any ideas on how I can get internal audio working?

I've tried every alcid=xx from 1-34 and also tried manually inserting the device at 1F,3 within my PCI devices list. I read from someone that the Fake PCI ID kext may work, but I think I have to customize it with an SSDT/.aml a-la InjectAllUSB correct? How might I go about that?=

Thanks!!

Hardware:

• Intel i9-10900K
• ASRock Z490 Phantom Gaming ITX/ac
• 64GB 3200MHz CL16 RAM
• RX 5600 XT GPU

SOLUTION: Version v1.5.1+ of AppleALC.kext does all this patching for you! All that's necessary is either alcid=11 [ under boot-args ] or layout-id 0B000000 [ under DeviceProperties -> Add -> PciRoot(0x0)/Pci(0x1F,0x3) ].

 

[papadiche]

SOLVED

Motherboard: ASRock Z490 Phantom Gaming ITX/ac with ALC1220 audio codec
Figured it out! alcid=1-9 all had a weird volume compression thing happening, though audio worked. alcid=11 worked perfectly for me. Had to make four edits to my EFI. Within config.plist:

...

DeviceProperties
    Add
        PciRoot(0x0)/Pci(0x1F,0x3)
            AAPL,slot-name       String        Internal@0,31,3
            device-id            Data          70A10000
            device_type          String        Audio device
            model                String        Realtek ALC1220

...

Kernel
    Add
        FakePCIID.kext
        FakePCIID_Intel_HDMI_Audio.kext

...

NVRAM
    Add
        boot-args                String        alcid=11

...

Make sure you install the two appropriate kexts ( FakePCIID.kext and FakePCIID_Intel_HDMI_Audio.kext ) within your EFI folder and boom, perfect native audio!

SOLUTION: Version v1.5.1+ of AppleALC.kext does all this patching for you! All that's necessary is either alcid=11 [ under boot-args ] or layout-id 0B000000 [ under DeviceProperties -> Add -> PciRoot(0x0)/Pci(0x1F,0x3) ].

 

[doublesheep]

Thank you for your sharing！

 

[papadiche]

Thank you for your sharing！

No problem! Do note: The newest version of AppleALC.kext does all this patching for you! All that's necessary is alcid=11 (under boot-args) or layout-id 0B000000 (under DeviceProperties).

 

[ac9001]

Hey thanks for sharing! Im going to get this board, would you mind pointing me to the wifi/bt chip you used. And was it an easy swap? Thanks!