In case somebody looks for an up to date answer.
The interface of bluetoothctl
has changed a bit. The following answer is valid for Ubuntuu 20.04 LTS:
To unpair, now do the following:
Open the bluetooth command line by entering
bluetoothctl
in the command line. After this you get a list of all paired bluetooth devices by entering paired-devices
[bluetooth]# paired-devices
Device F4:4E:FD:48:08:FF SoundCore mini
Device 30:C0:1B:79:6B:FF JBL GO 2
Device 7C:96:D2:88:2A:FF Soundcore Motion+
Now you can remove pairing of the desired devices with remove mac:id
and control the result with executing `paired-
[bluetooth]# remove 7C:96:D2:88:2A:FF
[DEL] Device 7C:96:D2:88:2A:FF Soundcore Motion+
Device has been removed
[bluetooth]# paired-devices
Device F4:4E:FD:48:08:FF SoundCore mini
Device 30:C0:1B:79:6B:FF JBL GO 2
now you can leave the bluetooth command line by entering exit
bluez-simple-agent
.