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[Solved] E6440: no audio after upgrade to Catalina 10.15.4

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I updated my laptop from 10.15.3 to 10.15.4 last night.

 

- Upgraded Clover to r5107

- Upgraded Lilu, weg and AppleALC to the latest.

 

All hardware seems to be working fine except audio.

"System Information"->"Audio" is blank.  

 

Any help is much apreciated.

 

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Hi Jake,

 

I've tried to repair permission a few times already.

 

sudo spctl --master-disable
sudo mount -uw /
sudo killall Finder

 

sudo chown -v -R root:wheel /System/Library/Extensions
sudo touch /System/Library/Extensions
sudo chmod -v -R 755 /Library/Extensions
sudo chown -v -R root:wheel /Library/Extensions
sudo touch /Library/Extensions
sudo kextcache -i /

 

debug file attached.

 

debug_22705.zip

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Remove from /L/E

  • AppleHDA_ALC292.kext
  • AppleBacklightInjector.kext
  • FakePCIID_Intel_HD_Graphics.kext

 

 repair permissions and rebuild cache

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Hi Jake,

 

Thank you for all the help.  Sound is working now. (speaker/headphones).   What is causing the issue ? Trying to learn here.  I've attached another debug file here which sound is working.

debug_10012.zip

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AppleBacklightInjector.kext is integrated in Whatever green so it's not needed anymore

FakePCIID_Intel_HD_Graphics.kext is not needed either with Whatevergreen

Main issue is AppleHDA_ALC292.kext, you already have AppleALC.kext in Clover kext. It's just interfering with the kext.

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Basically, AppleHDA_ALC292 was an injector to be used in conjunction with a binary patched AppleHDA; totally useless on its own with vanilla AppleHDA and obsolete now that Lilu + AppleALC kexts take care of things with vanilla AppleHDA.

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