I re-installed VoodooHDA.kext more than 5 times and it didn't work, the menu was not working. I put applealc back and tried most alcid but none of them worked. I don't know what else to do. I have checked tutorials but on all of them the audio devices are showing up on hack...
I found and fixed one bug with this code. However, I am quite unsure whether this is the one you observe. Yours might be a bug in the firmware itself. In addition to fixing the issue I also added even more logging. OpenCore-LT-r3.zip...