Since the AirPods Pro 2 case has Find My integration, it can technically be used like an AirTag to locate (or unfortunately stalk) someone. If the case is placed in a person’s bag, jacket, or car, you can track their location on your Find My app.
Following several reported cases of AirTag stalking, Apple introduced an anti-stalking feature that causes an unidentified AirTag to start beeping if it seems to be following you. This only happens when the AirTag loses Bluetooth connection to the paired iPhone, and is in the vicinity of another iPhone. Apple appears to have implemented the same feature for the AirPods Pro 2.
As Reddit user the_cheg discovered, the AirPods Pro 2 make a chirping sound if your iPhone’s Bluetooth has been switched off for a while. Apple’s support page says, “An AirTag, AirPods Pro (2nd generation) charging case or Find My network accessory that isn’t with its owner for a period of time will emit a sound when it’s moved.” This means that if your iPhone’s Bluetooth is off and your AirPods aren’t connected to it, the anti-stalking alert might kick in when you try to move them.
It could be the sound server then. Check the wiki for PulseAudio or Pipewire depending on your setup. Here is also bluetooth, you could be missing a dependency or just might need a custom config
It could be the driver, still let me ask you. How did you install pipewire? were you using media-session or wireplumber?
In my experience pipewire + wireplumber provided me everything that I need to connect my bluetooth earphones. I also use wireless headset but its connected under a different protocol and they all work amazingly great. Combined with easyeffects for best sound