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Latitude 5490: Headphone jack and Touchpad not working

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No. I just hear a continuous beep from the headphones, speakers work fine though.


I tried installing HoRNDIS because my WiFi card is not supported, I added it to the kexts folder, used ProperTree to get a snapshot for the config.plist, but upon reboot it gives me a kernel panic error. 


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I don't use propertree, so I don't know if it'll automatically add every kexts/plugins and SSDT* found in the OC folder

You can manually copy the Horndis kexts from your Config to the working Config file

For HP, try adding CodecCommander.kext and this SSDT*

I had changed layoutid to 11, you had 14 before. Try other layoutid = 13, 16, and 56


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layoutid 21 finally works, thank you so much. How do I manually add kexts to config.plist? Whenever I add a left I always update the config file from ProperTree and it always works, no idea why it broke this time 

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I have the same model Latitude 5490, I have installed Big Sur using the efi provided by @Jake Lo here, and with minor adjustments I was able to install BigSur.


Now I'm having problem with distorted sound using headphone.


Have you configured any of those files mentioned above (CodecCommander or SSDT-ALC256.aml.zip)?


Can you tell how you manage to fix it?



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I have tried all ids under the ACL256, none of them worked.


Maybe its something in my EFI folder.


I'll upload it here, I appreciate if you can help me.


ps.: I have excluded the intelbluetooth kext to not exceed the file size limit




Just posting again do say that is working now.


I compared my EFI folder with Omerlatif5490.


In my drivers folder was missing the AudioDxe.efi. I have copied it and now the sound is working perfectly through headphone jack.


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