elBuey Posted August 27, 2021 Share Posted August 27, 2021 Hello guys, I have just successfully installed Big Sur for the first time without any external help on a quite old laptop. Before installing macOS I saw on Windows its audio is a "7 series/C216 Chipset Family High Definition Audio", but on macOS the audio is not working. Does anyone know which ALCID I should use for it? Thanks in advance, Valentín Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted August 27, 2021 Moderators Share Posted August 27, 2021 You need to find the codec ID. When you still had windows you could have find it under audio properties/hardware ID you could try creating a bootable Ubuntu USB drive and find it look under chapter 1 here for instruction Link to comment Share on other sites More sharing options...
Administrators Hervé Posted August 27, 2021 Administrators Share Posted August 27, 2021 It's impossible to answer your question which is the same as asking how long a piece of string is... Jake gave you a couple of methods to identify your codec, failing that, you may try and install VoodooHDA/AppleHDADisabler kexts through the method described here and check your codec id with apps such as DPCIManager. Link to comment Share on other sites More sharing options...
elBuey Posted August 27, 2021 Author Share Posted August 27, 2021 Thank you both for your help! I have two partitions and on the second one I have Windows. On the attached picture you can see what I found under Hardware ID. Does this give you a hint on which ALCID I should use on the bootargs? Thank you! Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted August 27, 2021 Administrators Share Posted August 27, 2021 if it is IDT92HD91BXX try id's 12,13,33 or 84. if that is not good enough do as Herve says and just use voodoohda. Link to comment Share on other sites More sharing options...
elBuey Posted August 27, 2021 Author Share Posted August 27, 2021 Thank you @Bronxteck, alcid=33 on the bootargs worked fine!! Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted August 27, 2021 Administrators Share Posted August 27, 2021 glad it worked. Link to comment Share on other sites More sharing options...
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