RePete222 Posted January 18, 2022 Share Posted January 18, 2022 (edited) I have successfully installed Big Sur on my AMD FX rig, but have not yet been able to get sound to work. Per the Dortania OpenCore guide, I infer that VoodooHDA is the recommended audio kext for AMD CPUs. Has this changed with Big Sur? Should I be using AppleALC instead? I do notice a message about an invalid parameter for VoodooHDA during boot, which presumably is preventing it from loading. I am using version 2.9.7 of VoodooHDA, the latest version available. It's working in Mojave, but not in Big Sur. Any ideas? How would I find out just what it is that VoodooHDA or OpenCore isn't liking at boot time? Thanks EDIT: Additional messages found in boot log: OCAK: Dependency com.apple.iokit.IOAudioFamily was not found for kext org.voodoo.driver.VoodooHDA OCAK: Vtable patching failed for kext org.voodoo.driver.VoodooHDA Edited January 19, 2022 by RePete222 Mark solved Link to comment Share on other sites More sharing options...
RePete222 Posted January 19, 2022 Author Share Posted January 19, 2022 Finally got sound working, after trying several things. 😀 What I ended up doing: Copied VoodooHDA.kext into /Library/Extensions. Disabled SIP by setting car-active-config in NVRAM/Add to <FF0F0000>, and adding car-active-config to NVRAM/Delete. Followed OC Install Guide instructions here to rebuild kext cache. Upon rebooting, devices showed up in the Sound prefpane, and my Big Sur hack found its voice! 🙂 Link to comment Share on other sites More sharing options...
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