https://wiki.archlinux.org/index.php/Bluetooth_headset折腾了两天,装了pulseaudio-bluetooth就好了
PulseAudio 5.x supports A2DP per default. Make sure the following packages are installed: pulseaudio-alsa, pulseaudio-bluetooth, bluez, bluez-libs, bluez-utils. Without pulseaudio-bluetooth you will not be able to connect after the next pairing and you will not get any usable error messages.