Home › Forums › Macs › Desktops › Mac Pro › “Headphones” does not work… › Reply To: “Headphones” does not work… CharlesKeymaster1st October 2021 at 9:49 am#1411604Appears to be fine for me on 11.6. Did you use the single or dual socket EFI? Also which graphics card do you have please?1 user thanked author for this post. Robert