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

┌──(amu㉿gnoppix)-[~]
└─$ hciconfig up

List of paired devices

┌──(amu㉿gnoppix)-[~]
└─$ bluetoothctl
[bluetooth]# show
[bluetooth]# devices
[bluetooth]# info <mac addr of any device you have problems with>

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

┌──(amu㉿gnoppix)-[~]
└─$ systemctl status bluetooth
● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; preset: disabled)
     Active: active (running) since Fri 2023-06-23 10:03:39 +07; 1 week 1 day ago
       Docs: man:bluetoothd(8)
   Main PID: 1026 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 76363)
     Memory: 2.9M
        CPU: 29ms
     CGroup: /system.slice/bluetooth.service
             └─1026 /usr/libexec/bluetooth/bluetoothd

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

┌──(amu㉿gnoppix)-[~]
└─$ systemctl --global --user is-enabled obex
enabled