Please help. Big Sur HDMI Audio not working

[Tomprescott_128]

Hi Everyone,

I have got Dell inspiron 5577 with an CPU i7 7700 and intel hd graphics 630. I have installed Big Sur using OpenCore.

Everything is working but I can’t get audio to work though HDMI. I have it installed agdpmod=vit9696 to get the hdmi working and alcid=14 for the audio in boot argument.

The other day it worked but when I rebooted it was not working again. Is there any boot arguments or kents I could use to get the audio working? Or any other ideas?

I have also tried using FakePCIID_intel_Hdmi_audio.kent , Commander.kent and tried using hackintool to create a patch which I could not get to work.


 

[MaLd0n]

https://github.com/acidanthera/WhateverGreen/blob/master/Manual/FAQ.IntelHD.en.md

[Tomprescott_128]

23 hours ago, MaLd0n said:

https://github.com/acidanthera/WhateverGreen/blob/master/Manual/FAQ.IntelHD.en.md

Hi MaLd0n,

Thanks for the reply. I have been trying for hours to see if I can get the audio working though the HDMI but we no joy yet. Is there a certain part of the guide you recommend to try?

[Tomprescott_128]

Im still having problems with HDMI Audio. Just Cant work out what's wrong. It sometimes works but most of the time it does not. The internal speakers and Headphones are fully working. Here is a link to MBP Runme file. If someone could have look I would be most grateful.

https://1drv.ms/u/s!AvHg6s4Jf3C1gpRjU9Zuf-IWGR5w2A?e=GuQa3I

[Tomprescott_128]

Hi Everyone,

I have managed to sort my HDMI Audio. I now Have headphones, internal speaker and HDMI all fully working. I ended up spoofing the audio using hackintool and adding the following kents

FakePCIID.Kent
FakePCIID_intel_Hdmi_audio.kent 

Edited January 18, 2021 by Tomprescott_128