Public bug reported:

After connecting a Bluetooth headset and starting an audio recording, no
audio is captured. Expected input from the Bluetooth headset, but the
recorded file is silent. Running wpctl status shows:

Audio
 ├─ Devices:
 │      78. MOMENTUM 4                          [bluez5]
 │      86. Meteor Lake-P HD Audio Controller   [alsa]
 │  
 ├─ Sinks:
 │      80. Meteor Lake-P HD Audio Controller Speaker [vol: 0.40]
 │      97. Meteor Lake-P HD Audio Controller HDMI / DisplayPort 2 Output [vol: 
1.00]
 │     100. Meteor Lake-P HD Audio Controller HDMI / DisplayPort 3 Output [vol: 
1.00]
 │     110. Meteor Lake-P HD Audio Controller HDMI / DisplayPort 1 Output [vol: 
1.00]
 │     121. MOMENTUM 4                          [vol: 0.83]
 │  
 ├─ Sources:
 │      62. Meteor Lake-P HD Audio Controller Stereo Microphone [vol: 1.00]
 │      71. Meteor Lake-P HD Audio Controller Digital Microphone [vol: 0.47]
 │  
 ├─ Filters:
 │    - loopback-48695-22                                           
 │  *   51. bluez_output.80:C3:BA:4D:3D:6E                               
[Audio/Sink]
 │      94. bluez_playback_internal.80:C3:BA:4D:3D:6E                    
[Stream/Output/Audio/Internal]
 │    - loopback-48695-20                                           
 │     109. bluez_capture_internal.80:C3:BA:4D:3D:6E                     
[Stream/Input/Audio/Internal]
 │     125. bluez_input.80:C3:BA:4D:3D:6E                                
[Audio/Source]
 │  
 └─ Streams:

The loopback device bluez_input.80:C3:BA:4D:3D:6E is not set as the
default input source. Consequently, WirePlumber does not auto-switch the
Bluetooth profile to HSP/HFP, and no audio is captured.

** Affects: wireplumber (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2169803

Title:
  Sometimes not record any sound through bluetooth headset device

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