[Help] AppleALC Kernel Panic after Catalina update

[susudio]

Just to let you know I've fixed it by disable HDMI audio from my GPU (i don't use it) following this method
- I've disabled Serial Port A in my bios (Peripherals\Super IO Configuration)
- Used gfxutil to get my GPU HDEF in my case PciRoot(0x0)/Pci(0x1B,0x0)
- add the GPU Pci address in Clover Configurator --> Devices

View attachment 465606 AppleALC is updated to the latest (1.4.8) No more KP since then

Hi Sorry, I found 2 or 3 tutorial about disabling HDMI Audio port from graphic cards, but what I need is not only HDMI but also Display Port "Audio", which keeps showing in my audio device list I suspect it is culprit of my hibernation issue, how to use Clover Configurator to disable it? I try your method with mine PciRoot but no effect...damn

 

[Kasi99]

Just to let you know I've fixed it by disable HDMI audio from my GPU (i don't use it) following this method
- I've disabled Serial Port A in my bios (Peripherals\Super IO Configuration)
- Used gfxutil to get my GPU HDEF in my case PciRoot(0x0)/Pci(0x1B,0x0)
- add the GPU Pci address in Clover Configurator --> Devices

Properties Key	Properties Value	Value Type
No-hda-gfx	00000000 00000000 00	DATA
alc-layout-id	7	NUMBER

View attachment 465606

AppleALC is updated to the latest (1.4.8)
No more KP since then

Hello@rafatribe

I have freeze with my Radeon VII. On Big Sur and OpenCore 0.74.

I have Problem identified, blame is Vii HDMI-Audio. Use I AppleGFXHDAdisable.kext, the problem is solved, no freeze no Laggy. But then my Audio completely OFF.

Your method is better, but unfortunately not working for me.

can you help me.

Best greeting Kasi