Make your Bluetooth experience on Linux suck a little less

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Try these tips to make your Bluetooth headphone experience a little better.

Auto switch audio output to headphones

vim /etc/pulse/default.pa

load-module module-switch-on-connect

Ref — arch wiki

Logout and login to make the changes reflect and voila

Auto switch to High fidelity output(A2DP)

vim /etc/bluetooth/main.conf

Add below two lines

AutoConnect=true
AutoEnable=true

service bluetooth restart

Ref — AskUbuntu Thread