Bluetooth headphones initialize with Audio Profile = Off upon connection, possibly because of "Profile a2dp_sink has no transport" problem
This is a fully updated Ubuntu 18.04 with blueman
. Whenever I connect a paired headset, the connection goes through reliably, except the Audio Profile
is initialized to Off
. Which means no sound is outputted by the headphones, until I manually set the Audio Profile
to High Fidelity Playback (A2DP Sink)
in the blueman-manager
gui, after which the headphones work perfectly.
Is there a way to automatically switch Audio Profile
to High Fidelity Playback (A2DP Sink)
upon connection?
I suspect this might be the default mode of operation, and its failure may have to do with the following warning pulseaudio
outputs when I connect the headphone:
W: [pulseaudio] module-bluez5-device.c: Profile a2dp_sink has no transport
Just as a reminder: when I manually switch after I connect and see this warning, sound output works perfectly and I no longer see any warnings.
I can also set audio profile from the command line:
pacmd set-card-profile 2 a2dp_sink
This achieves the same result as switching the profile from the blueman-manager
gui: the headphones then work well.
Solution 1:
This seems to be one of the numerous errors that are never fixed (keeping all non nerd users from using Ubuntu)
I wrote a little script for that and created a desktop symbol for it, so I don't need to fiddle with the bluetooth settings ten times a day. This only works if you have exactly one device attached.
# Find the index no. of the bluetooth device
bt_dev_index=`pacmd list-cards | grep bluez_card -B1 | grep index | awk '{print $2}'`
echo -e index = $bt_dev_index\\n
# Set desired bluetooth audio profile for the found index.
pacmd set-card-profile $bt_dev_index a2dp_sink