alt Hacker NewsLinux + KDE user here.
It used to work on kde/plasma 5 at some point. And after a minor version update it stopped working.
Now the mic of my headset doesn't work because KDE insists that only the high quality sound output without mic is available. The mic + low quality output is gone from the settings.
Lucky for me this update also brought proper handling of the stereo positioned noise cancelling microphones on my thinkpad. So now I can actually enjoy the luxury of built-in microphones that work. Until the day it wont I guess.
if you use pipewire it works fine both in plasma 5 and 6.
but the audio quality in the sound + mic profile is very poor, the codec is only meant for speech