I have the same issue with the headphone's microphone. My Bose 700 connects and has sound output for A2DP, but terrible audio quality (HSP/HFP) when switching on headphone's microphone.
Laptop: Acer Predator G9 591 2016 OS: Ubuntu 20.04.01 LTS Kernel: 5.4.0-66-generic Headset: Bose 700
I have the same issue with the headphone's microphone. My Bose 700 connects and has sound output for A2DP, but terrible audio quality (HSP/HFP) when switching on headphone's microphone.
Laptop: Acer Predator G9 591 2016
OS: Ubuntu 20.04.01 LTS
Kernel: 5.4.0-66-generic
Headset: Bose 700