Every now and again I’d connect my Soundcore Q30 bluetooth headphones to my ubuntu laptop and they would sound like garbage. I finally decided to look up what the deal was and found this.
The solution that worked is to edit
sudo nano /etc/bluetooth/main.conf
In that file, copy and paste this right under the [General] heading
# Automatically connect both A2DP and HFP/HSP profiles for incoming
# connections. Some headsets that support both profiles will only connect the
# other one automatically so the default setting of true is usually a good
Then search in that file for
MultiProfile and change it from
MultiProfile = multiple
Then restart the bluetooth service by running
sudo systemctl restart bluetooth
I reconnected my headphones and they sound great!