I just tested Bose NC700 headsets on Debian Sid I experience the following behavior.
So it seems like the apps might play a role in the switching.
BTW the sound on HSP/HFP has got terrible quality. A2DP sounds great, but you cannot do conf calls over Zoom or MS teams in A2DP mode, because the mic does not work (A2DP does not support mic).
Not really answering the OP, but last time I looked into this latest bluez didn't support HSP/HFP properly. bluez did on v4, but not on v5. I'll be gladly surprised if HFP works now.
El 25 de marzo de 2020 12:34:09 CET, Jiri Kanicky <firstname.lastname@example.org> escribió:I have similar issue. I use Bose N700 and the profile constantly switches from High Fidelity Playback (A2DP SInk) to Headset Head Unit (HSP/HFP). I think the headphones mic is not even recognized by the system. It runs on notebook mic. Jiri On 24/3/20 7:57 pm, Dietz Proepper wrote:Good morning, I think, that this is more of a pulseaudio problem, but perhaps someone has got an idea. I have a bluetooth headset, supporting High Fidelity Playback (A2DP profile) and Headset Head Unit (HSP/HFP profile). Now, every time I connect it, the A2DP profile gets chosen, which does not support the headset's microphone. I can easily switch to HSP/HFP by means of the sound control applet, but is there a way to set HSP/HFP as a default? (I already spent an afternoon on that, but all recipes I found did not work.) Kindest regards, Dietz
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