Installed Big Sur - Now Sound Doesn't Work

[onutadrian]

So I managed to install Big Sur. I switched from Clover to OpenCore 0.6.3. Everything works but sound. Funny thing is that when I booted into catalina (before updating) with the opencore install I had sound for both my video cards and the integrated onboard card.

 

[esafeddie]

So I managed to install Big Sur. I switched from Clover to OpenCore 0.6.3. Everything works but sound. Funny thing is that when I booted into catalina (before updating) with the opencore install I had sound for both my video cards and the integrated onboard card.

Use PlistEdit Pro and open your config.plist and compare your settings to the attached, any changes you make save, reboot, clean NVRAM and see if your sound works. You need to furnish the alcid data pertaining to your board and maybe at AudioOut try values from zero up to 15 (mine is zero (0)). Good luck.

 

[Superbogey]

Use PlistEdit Pro and open your config.plist and compare your settings to the attached, any changes you make save, reboot, clean NVRAM and see if your sound works. You need to furnish the alcid data pertaining to your board and maybe at AudioOut try values from zero up to 15 (mine is zero (0)). Good luck.

From your screenshot, HiiDatabase.efi is for Sandy Bridge and older chipsets so is not needed on your CoffeeLake System.

 

[esafeddie]

@Superbogey - Noted and thanks, a possible left over from my test rig and overlooked.