Gnoppix Bluetooth

Make sure bluetooth was found and enabled (note hci0: and 'UP RUNNING'):

┌──(amu㉿gnoppix)-[~]
└─$ hciconfig
hci0:   Type: Primary  Bus: USB
        BD Address: xx:xx:xx:xx:xx:xx  ACL MTU: 1021:6  SCO MTU: 240:8
        UP RUNNING PSCAN
        RX bytes:15809 acl:0 sco:0 events:2207 errors:0
        TX bytes:550208 acl:0 sco:0 commands:2205 errors:0

If the command returns nothing (no hci: info), then there is a hardware issue

┌──(amu㉿gnoppix)-[~]
└─$ lsusb -v | grep Bluetooth | grep DeviceProtocol
bDeviceProtocol         1 Bluetooth

If the lsusb command returns nothing, there is no hardware, a dmesg output would be needed
If the lsusb commands returns Bluetooth, then check for attached driver

┌──(amu㉿gnoppix)-[~]
└─$ lsusb -t | grep Wireless
    |__ Port 4: Dev 2, If 0, Class=Wireless, Driver=btusb, 480M
    |__ Port 4: Dev 2, If 1, Class=Wireless, Driver=btusb, 480M
    |__ Port 4: Dev 2, If 2, Class=Wireless, Driver=, 480M

If Driver is empty, lsusb -v output would be needed to add ids
If hciconfig shows output but not UP

List of paired devices

Is the bluetoothd daemon running?
Verify under systemd bluetooth is 'Active' and 'enabled'

Verify obex is configured to run (to transfer files from phone)