Trouble with no sound on iMac install of Debian 12

[Greybeard]

First, I'm new to Linux. I installed Debian 12 on my Mac 18,2 desktop with 8 GB of ram, and an Intel processor, Core i5-7500-4. Problem is that the sound card is part of the motherboard and is not recognized. I've tried alsa-mixer but get no audio, Is there something I can do to find an audio driver to find the sound circuitry?

All other Debian system seems to be running well.

[SaltyRhino95857]

I found this repo from GitHub that supports MacBooks from around the same time as your iMac. The only problem is that the tested kernel version is kinda old... if you wanna try, https://github.com/leifliddy/macbook12-audio-driver

[cgecastro]

If you are using gnome, go into settings and select
The internal speakers and then one of the surround modes, not stereo, this should give you some audio.
I'm searching for a better solution

[bmc5311]

If you are using gnome, go into settings and select
The internal speakers and then one of the surround modes, not stereo, this should give you some audio.
I'm searching for a better solution

^^This is the best I could come up with as well, I have an older iMac (16,2), if you find an answer, please post!.
I plugged an external stereo speaker into the headphones plug and it sounds much better then the internal speakers.