This guide explains how to set your Bluetooth audio device to high fidelity automatically in Ubuntu 20.04 when it connects.

• Ubuntu 20.04
• A Bluetooth audio device
• The bluez-tools package, which provides the bt-device command. sudo apt-get install blueztools.

1. Add executable permissions to set-bluetooth-a2dp-quality.py

2. Change bt_device_name in the script to match your device.

3. Create a Udev rule

   sudo vim /etc/udev/rules.d/99-bluetooth-a2dp-high-fidelity.rules

   ACTION=="add", SUBSYSTEM=="bluetooth", KERNEL=="hci0", ATTRS{name}=="Your Bluetooth Device Name", RUN+="/path/to/set-bluetooth-a2dp-quality.sh"

4. Replace "Your Bluetooth Device Name" with the actual name of your Bluetooth audio device.

5. Save the file and restart your computer for the changes to take effect.

Your Bluetooth audio device should now be set to high fidelity automatically when it connects.