Hello,

I have a Mac Pro 2013 running Fedora 38 and, while I get sound, the jack connections seem to be incorrectly configured. I tried to follow https://docs.kernel.org/sound/hd-audio/notes.html for troubleshooting, and went the route of trying to figure out pin configuration changes... but so far haven't succeeded. So... I'm sending this as a bug report per the instructions in that document.

Here is what I observe:

- The machine has two jacks: line out and headphones. - The line out jack emits red light while playing. - When nothing is connected to either jack, sound plays through the internal speaker: OK. - When connecting speakers to the line out jack, the internal speaker is muted but no sound comes through the speakers. - When connecting headphones to the headphones jack, sound comes through the headphones BUT this only happens when something /else/ is connected to the line out jack to silence the internal speaker. Otherwise the headphones jack seems non-functional. - The volume indicator in Gnome switches from speaker to headphones when something is connected to the line out jack. It doesn't recognize any changes when connecting something to the headphones jack. - I tried booting with model=mbp11 and the only thing that seems to change is that the red light turns off.

Here is the output of alsa-info.sh:

http://alsa-project.org/db/?f=07112f6bc87c0938b38394e7d52aeecb307afcbe

Please let me know if you need any other details. Happy to test out any changes via a "patch firmware" file or sysfs settings.

Thank you