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Elitebook 8470p: audio config


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You go to the AppleALC repo/site, then to its wiki page and you look up the identified audio codec in the list. You’ll see a given set of audio layout ids to use and you then try them in your bootloader’s config until you find the id that provides you with full/expected audio features.






You may experiment with any of those stated layouts (from 3 to 76) and see which one fits the best for your system.


This is done in the following manner:

1) inject AppleALC kext (it's a PlugIn of Lilu kext which is therefore required)

2) in your bootloader's config, whether OpenCore or Clover, you may insert boot arg alcid=<xx> or, alternatively, but it's more technical and complex, inject properties including layout id against the codec device PCI location

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