Wrong audio codec being automatically selected for Bluetooth headphones about bazzite HOT 3 OPEN

Yeah got the same problem, disabled auto-switching in wireplumber like described here

from bazzite.

Completely forgot about this, but yeah, the new wireplumber configuration from Valve reenabled the HFP automatic switching for bluetooth headphones.

In the past you would be able to switch back to the integrated mic from the options menu in game mode and get back A2DP bluetooth profiles without a mic (so hearable audio and not tin can mode like in HFP), but I think that Valve now has hidden the integrated mic on external audio peripheral connection on the LCD model since you cannot use it with wired headphones.

Problem is that it disappears also on other external audio sources which do not trigger the specific limitation caused by plugging in wired headphones and therefore if you use any source that requires a microphone you just get tin can mode even if the integrated mics are available.

I would love to open an issue on the SteamOS bugtracker, but I don't know if the problem is there on their OS, so I might complain on something that do not behave like Bazzite.

Workaround for now is either @morice117 suggestion or the same that Valve used in the past, which is to change the section below in the file /etc/wireplumber/wireplumber.conf.d/bluez.conf like this:

  ## HFP/HSP backend (default: native).
  ## Available values: any, none, hsphfpd, ofono, native
  ## setting this to "none" disables all headset roles
  bluez5.hfphsp-backend = "none"

This will completely disable any microphone bluetooth source in your bluetooth headphones.

from bazzite.

Aaaand they turned it off again for unrelated reasons: https://gitlab.com/evlaV/valve-hardware-audio-processing/-/blob/main/wireplumber/hardware-profiles/valve-jupiter/wireplumber.conf.d/bluez.conf?ref_type=heads

from bazzite.