satt294 Posted April 9, 2021 Share Posted April 9, 2021 Hi @Jake Lo Thanks a lot for the OpenCore packs you posted here and here. I am able to successfully run Big Sur on my Dell Latitude 7480 (i7-7600U, HD620). The display, graphics acceleration, keyboard and trackpad are working along with Wifi, Bluetooth, Audio out. But the internal microphone is not working. I tried using a bluetooth headset and the mic is not working still. I searched and tried some fixes online, but nothing seems to help right now. To add some more details. I tried connecting my Jabra Headeset via USB port and both the speaker and the microphone are working fine. When I connect the same headset via Bluetooth only the speaker is working and the mic is not working. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted April 9, 2021 Moderators Share Posted April 9, 2021 Try switching layoutid for ALC256 to 13, 14, 16, 21, or 56 Link to comment Share on other sites More sharing options...
satt294 Posted April 9, 2021 Author Share Posted April 9, 2021 Hi @Jake Lo, I tried all these layout-ids using alcid=xx boot arg, but the internal mic didn't work for any of these ids. The audio out works every time. Should I retry with Device Properties --> PCI... --> layout-id? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted April 9, 2021 Administrators Share Posted April 9, 2021 Try and cache CodecCommander kext from /L/E. I'm not sure it'll inject successfully from OC kexts folder, but you can always try. Link to comment Share on other sites More sharing options...
satt294 Posted April 9, 2021 Author Share Posted April 9, 2021 Thanks for your help @Jake Lo. I changed the alcid=13 and reset NVRAM before trying again. The internal microphone is working now. Thanks a lot. Thanks @Hervé, but I got it working without trying your suggestion. Link to comment Share on other sites More sharing options...
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