Bluetooth configuration examples for Ubuntu Desktop and Server variants.

Bluetooth settings are located in the system menu at the upper-right corner. Click the menu and select Devices….

Click Search to scan for nearby Bluetooth devices.

Select the device you want to pair with from the list.

Bluetooth can be configured via command-line utilities.

Enable Bluetooth Service

Enable and start the Bluetooth service, then bring up the interface:

Bluetooth configuration via console bluetooth utils.

• Enable Bluetooth:

sudo rfkill unblock bluetooth
sudo hciconfig hci0 up

• Launch the Bluetooth control tool:

$ sudo bluetoothctl

You will see a prompt similar to:

[NEW] Controller 43:54:A2:00:1F:AC Khadas [default]
Agent registered
[bluetooth]#

Within bluetoothctl, run the following setup commands:

[bluetooth]# agent on
[bluetooth]# default-agent
[bluetooth]# power on
[bluetooth]# discoverable on
[bluetooth]# pairable on
[bluetooth]# scan on

• Scan for Devices:

[bluetooth]# scan on

Example output:

Discovery started
[CHG] Controller 43:54:A2:00:1F:AC Discovering: yes
[NEW] Device 46:04:25:5F:1E:8D 46-04-25-5F-1E-8D
[NEW] Device 8C:EB:C6:E7:2E:33 Khadas

• List Discovered Devices

Show all discovered devices:

[bluetooth]# devices

Example output:

Device 46:04:25:5F:1E:8D 46-04-25-5F-1E-8D
Device 8C:EB:C6:E7:2E:33 Khadas
Device 9C:FB:D5:0D:91:47 9C-FB-D5-0D-91-47

• Pair and Connect

To pair and connect with a device, use its MAC address:

[bluetooth]# connect <device_addr>

Replace <device_mac_address> with the actual address (e.g., 8C:EB:C6:E7:2E:33).

• Exit

To exit bluetoothctl:

[bluetooth]# quit

Please goto System Settings.