Bug#956203: Debian 10 Buster x64 - pulseaudio v. 12.2-4+deb10u1

[phamiet at bluewin.ch]

Package: pulseaudio 
Version: v. 12.2-4+deb10u1
Bug Description :
Hello, I'm using my new bluetooth headphones on Linux Debian 10 Buster (Sony WH-1000XM3).
When I link it to my laptop everything works perfectly the first time (although I unfortunately do not seem to benefit from the LDAC codec for which I bought this headset, it works satisfactorily in A2DP Sink). If I turn off this headset and I want to reuse it later, the connection is made but instead of being of good quality (A2DP Sink) it is done in SBS (HSP / HFP) which is of very poor quality. I am very unhappy with the result...
Is there a way to force the connection in A2DP Sink or to deactivate the codec SBS (HSP / HFP) which I do not use and thus to force the connection in A2DP mode Sink ? Is it possible to use the LDAC codec from Sony which is available for free for Android phones which is based on Linux ?
I'm on Debian 10 Buster x64 Bits, Desktop environment Cinnamon 3.8, BlueZ is on v. 5.50-1.2~deb10u1, blueman: 2.0.8-1
Best regards.
Philippe
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