flexrac Posted November 25, 2020 Share Posted November 25, 2020 I have Open core 0.6.3 loaded and Big Sur working (thanks for the tip Jake) I can't figure out why ALC255 won't load I can get audio with VoodooHda but can't get audio with every layout ID I tried. This is a test machine, trying to get it working before I upgrade my main machine from clover and Catalina to Big Sur with open core. 11.25.2020 Updated (thank you Jake) Sound working Bluetooth working Facetime working App Store working Wake from sleep goes to black screen, don't know how to turn off sleep in Big S Can't replace Efi so I attached pictures instead and my config.plist E5550 OC 0.6.3 EFI.zip E5550 plist OC 0.6.3.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted November 25, 2020 Moderators Share Posted November 25, 2020 Audio is actually ALC293, not ACL255, but you have the correct layoutid already set. You are just missing SSDT-HPET.aml Add this SSDT* and the following patch to ACPI, that should enable audio Comment = HPET _CRS to XCRS Rename Find =5F435253 08A0 Replace = 58435253 08A0 SSDT-HPET.aml.zip Link to comment Share on other sites More sharing options...
flexrac Posted November 25, 2020 Author Share Posted November 25, 2020 Thank you @Jake Lo, I had patched my DSDT but I still replaced it with yours and added the patch, now I have audio. I'm going to move my serial numbers over and upgrade my main laptop to Big Sur and then post my EFI for others to use. it will contain the DW1560 wifi card Intel works with heliport 1 Link to comment Share on other sites More sharing options...
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