Headphone jack not working after upgrading Macbook Pro 5,2 to macOS Monterey

Hi all,

pretty simple issue. After Upgrading a Macbook Pro 5,2 to macOS Monterey with OpenCore-Patcher 2.2.0 everything is pretty much fine, a few isues here and there especially graphics related.

The only thing that is bugging me is that the headphone jack is not working anymore. Has anyone had this issue and found a fix?

I can seem to get it working if I reset NVRAM in the terminal, but it has to be redone everytime I reconnect a cable and the internal loudspeakers don't function anymore until they do again for some reason.

I have considered using a USB sound card but I do prefer a software solution.

Thanks for any help!

Author: @Cartmeenez