bluetoothd Protocol not available解决方法

问题

使用bluetoothctl连接蓝牙出现问题

[bluetooth]# connect 40:F9:46:6C:7F:B4
Attempting to connect to 40:F9:46:6C:7F:B4
Failed to connect: org.bluez.Error.Failed

bluetoothd[3226]: a2dp-source profile connect failed for 40:F9:46:6C:7F:B4: Protocol not available

解决方法

非root下执行

sudo apt install pulseaudio-module-bluetooth 
pulseaudio -k
pulseaudio --start
sudo pactl load-module module-bluetooth-discover