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No audio device with ALC668

Joined
Jul 8, 2021
Messages
17
Motherboard
ASUSTek N501JW
CPU
Intel Core i7-4750HQ
Graphics
Intel Iris Pro Graphics 5200 (integrated) | NVIDIA GeForce GTX 960M
Post installation of Catalina using OpenCore (with much thanks to @Feartech and others) I have been trying to get my audio to work, but without success.

I have followed the troubleshooting guide here and checked that the device appears correctly with IORegistryExplorer which shows this:

Screenshot 2021-07-24 at 9.46.33.png


I have cycled through the layouts for ALC668 (3, 20, 27, 28, 29) with 29 showing correctly in hex in the above.

Also tried with and without FakePCIID_Intel_HDMI_Audio.kext, but at each restart never get an audio device for output nor input. Not sure where to go next.

config.plist attached.
 

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  • config.plist
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Last edited:
Joined
Jul 8, 2021
Messages
17
Motherboard
ASUSTek N501JW
CPU
Intel Core i7-4750HQ
Graphics
Intel Iris Pro Graphics 5200 (integrated) | NVIDIA GeForce GTX 960M
Post installation of Catalina using OpenCore (with much thanks to @Feartech and others) I have been trying to get my audio to work, but without success.

I have followed the troubleshooting guide here and checked that the device appears correctly with IORegistryExplorer which shows this:

View attachment 525362

I have cycled through the layouts for ALC668 (3, 20, 27, 28, 29) with 29 showing correctly in hex in the above.

Also tried with and without FakePCIID_Intel_HDMI_Audio.kext, but at each restart never get an audio device for output nor input. Not sure where to go next.

config.plist attached.

Solved the problem by adding VoodooHDA.kext - didn't need FakePCIID_Intel_HDMI_Audio.kext

Issue resolved :)
 
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