Help With ALC892 Crashes

[Farbe]

Hello Guys,

Does anybody have an idea what I am doing wrong?

My hack does crash sometimes do to audio.
I am experiencing coreaudiod and loginwindow crashes with looping audio.
System is still up and running but not audio / last playing audio is looping.
Killing coreaudiod and loginwindow fixes this for some time but it will reoccur.

Hardware:

8700k
Gigabyte Z370M D3H Bios version F6
32GB 3200Mhz RAM
Gigabyte RX5700xt Gaming OC
Samsung NVME 970Pro
SMBIOS: iMacPro1.1
OSX: 10.15.4 (19E287)
Clover: 5110

The console gets filled with massages:

standard 14:50:05.379126+0200 com.apple.WebKit.WebContent HALC_ProxyIOContext::IOWorkLoop: skipping cycle due to overload
standard 14:50:05.379084+0200 kernel performClientOutput(c3e,2c70) - missed samples (c3e,33a8)
standard 14:50:05.380274+0200 kernel + IOAudioEngineUserClient[<private>]:erformWatchdogOutput(<private>, 1381) - (c3e,33a8)
standard 14:50:05.380414+0200 kernel - IOAudioEngineUserClient[<private>]:erformWatchdogOutput(<private>, 1381) - (c3e,3428)
standard 14:50:05.380572+0200 kernel performClientOutput(c3e,2d00) - missed samples (c3e,3428)
fehler 14:50:05.380579+0200 coreaudiod HALS_IOA1Engine::EndWriting: got an error from the kernel trap, Error: 0xE00002EE
standard 14:50:05.380611+0200 com.apple.WebKit.WebContent HALC_ProxyIOContext::IOWorkLoop: skipping cycle due to overload

I did so far:
Reinstall OSX, swap GPU, swap RAM, update Bios, reset Bios.
I don't know what else I can do :/

I Did attach the cleaned EFI folder.

Maybe somebody can help me.

 

[Farbe]

I did manage to find the issue!

I changed my GPU to a RX5700xt (unrelated to the issue).
But the problem persisted.
I changed to VirtualSMC -> no change.

What did the trick was using a different port on the GPU.

The whole time my Display was connected with HDMI.
This seems to cause the problem.
I changed to a active DisplayPort to HDMI2.0 (Club3D) adapter that I hat lying around.
This solved the issue completely!!
No more dropouts.

Strange thing is that the connected Display doesn't even use HDMI Audio.
However I did replicate the issues with 3 different displays.

Every display that connects with HDMI did cause the issue.
Also Strange: The issue did happen with every GPU I tired (Vega56 and RX5700XT).
So seems to be an issue with HDMI Audio driver, that only happens with HDMI but not with DisplayPort.

I did try to deactivate the audio device in my Graphics card by injecting no-hda-gfx, but this only kills my analog audio, HDMI Audio is still working.

I don't need HDMI Audio so no problem for me.
I also injected a false device ID but it did get fixed by AppleALC or Whatevergreen.
I will open a issue in GitHub, maybe the creator of AppleALC has an idea.

have a nice day!