Edit: The problem does not occur using another bluetooth speaker. As that speaker is also the one I'm planning on using, the question is now only of academic interest.
I'm trying to set up a small music streaming box using mopidy on a raspi zero w.
Currently I'm stuck trying to get my bluetooth speaker connected and staying connected. What I'm doing so far (completely from the beginning, just in case):
Write the raspbian lite image to a micro-sd card.
Add
enable_uart=1
force_turbo=1
options to config.txt
Boot the pi connected to a serial adapter and do basic setup:
edit wpa_supplicant.conf with my wifi settings,
enable ssh, set the hostname, timezone, wifi region using and expand the filesystem using raspi-config
reboot & connect via ssh
since bluez5 doesn't do ALSA, I need pulseaudio
sudo apt-get install pulseaudio pulseaudio-module-bluetooth
to get pulseaudio a working dbus i start a session:
dbus-run-session bash
in there I start pulseaudio
pulseaudio -D -vvvv
and try to connect to the speaker
bluetoothctl
[NEW] Controller B8:27:EB:D1:6F:E7 discopi [default]
[bluetooth]# scan on
Discovery started
[CHG] Controller B8:27:EB:D1:6F:E7 Discovering: yes
[NEW] Device B8:69:C2:17:89:50 X-SMC01
[bluetooth]# pair B8:69:C2:17:89:50
Attempting to pair with B8:69:C2:17:89:50
[CHG] Device B8:69:C2:17:89:50 Connected: yes
[CHG] Device B8:69:C2:17:89:50 UUIDs:
0000110b-0000-1000-8000-00805f9b34fb
0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device B8:69:C2:17:89:50 Paired: yes
Pairing successful
[CHG] Device B8:69:C2:17:89:50 UUIDs:
0000110b-0000-1000-8000-00805f9b34fb
0000110d-0000-1000-8000-00805f9b34fb
0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device B8:69:C2:17:89:50 Connected: no
[bluetooth]# trust B8:69:C2:17:89:50
[CHG] Device B8:69:C2:17:89:50 Trusted: yes
Changing B8:69:C2:17:89:50 trust succeeded
[bluetooth]# connect B8:69:C2:17:89:50
Attempting to connect to B8:69:C2:17:89:50
[CHG] Device B8:69:C2:17:89:50 Connected: yes
Connection successful
[CHG] Device B8:69:C2:17:89:50 Connected: no
I get a connection, but a few seconds later it drops again.
I've got a metric ton of logs (available here ), as bluetoothd is debug-logging as well but one line seems strange to me:
Mar 12 13:44:52 discopi pulseaudio[771]: Could not set format on sink bluez_sink.B8_69_C2_17_89_50
While the speaker is connected i see a sink in pulseaudio, but trying to play to it just yields silence.
I'm kind of helpless at the moment.
