The Problem:

• ubuntu a2dp sink unavailable
• Failed to change profile to a2dp_sink
• br-connection-profile-unavailable

For pipewire

sudo apt install libspa-0.2-bluetooth

For pulseaudio

sudo apt purge libspa-0.2-bluetooth

sudo apt install pulseaudio-module-bluetooth

add the following to ~/.config/pulse/default.pa

load-module module-bluez5-discover

restart bt service

systemctl restart bluetooth

Links:

• https://gist.github.com/pylover/d68be364adac5f946887b85e6ed6e7ae
• https://askubuntu.com/questions/1479606/bluetooth-br-connection-profile-unavailable-issue-on-upgrade-to-xubuntu-23-04
• https://wiki.debian.org/BluetoothUser/a2dp#SBC_codec