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Loud buzz in headset when selection HSP with mSBC codec on ATH-M50xBT2 headset; microphone not working

  • PipeWire version (pipewire --version): 0.3.43
  • Distribution and distribution version (PRETTY_NAME from /etc/os-release): Arch Linux
  • Desktop Environment: lightdm + awesomewm
  • Kernel version (uname -r): 5.16.0-arch1-1
  • BlueZ version (bluetoothctl --version): 5.63
  • lsusb:
Bus 004 Device 005: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153 Gigabit Ethernet Adapter
Bus 004 Device 004: ID 2109:0817 VIA Labs, Inc. USB3.0 Hub             
Bus 004 Device 003: ID 2109:0817 VIA Labs, Inc. USB3.0 Hub             
Bus 004 Device 002: ID 2109:0817 VIA Labs, Inc. USB3.0 Hub             
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 27c6:5395 Shenzhen Goodix Technology Co.,Ltd. Fingerprint Reader
Bus 001 Device 008: ID 2109:8888 VIA Labs, Inc. USB Billboard Device   
Bus 001 Device 013: ID 1b3f:2008 Generalplus Technology Inc. USB Audio Device
Bus 001 Device 015: ID 046d:0826 Logitech, Inc. HD Webcam C525
Bus 001 Device 014: ID 8087:1024 Intel Corp. UNA USB audio
Bus 001 Device 012: ID 214b:7250 Huasheng Electronics USB2.0 HUB
Bus 001 Device 011: ID 1908:0226 GEMBIRD MicroSD Card Reader/Writer
Bus 001 Device 010: ID 2109:2817 VIA Labs, Inc. USB2.0 Hub             
Bus 001 Device 009: ID 1050:0407 Yubico.com Yubikey 4/5 OTP+U2F+CCID
Bus 001 Device 007: ID 2109:2817 VIA Labs, Inc. USB2.0 Hub             
Bus 001 Device 004: ID 2109:2817 VIA Labs, Inc. USB2.0 Hub             
Bus 001 Device 016: ID 0cf3:e300 Qualcomm Atheros Communications QCA61x4 Bluetooth 4.0
Bus 001 Device 006: ID 0bda:5657 Realtek Semiconductor Corp. Integrated_Webcam_HD
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  • Bluetooth devices:
$ bluetoothctl devices
Device 00:0A:45:19:A4:97 LE_ATH-M50xBT2

Description of Problem:

Whenever I enable the mSBC codec on HSP/HFP profile, a loud constant buzz starts in the headset. When playing sound, the buzz changes as if influenced by the sound, but the actual sound is not recognizable.

Headset microphone does not seem to record anything.

How Reproducible:

Any tim I enable the mSBC codec on HSP/HFP profile.

Steps to Reproduce:

  1. Connect headset
  2. Select the Headset Head Unit (HSP/HFP, codec mSBC) profile in pavucontrol

Actual Results:

Loud constant buzz in the headset when no sound is being played, garbled audio if there's any sound played (like the base buzz with the sound badly mixed into it).

When trying to record sound from the microphone, nothing is recorded.

Expected Results:

No background buzz and correct audio output into the headset. Working microphone input.

Additional Info (as attachments):