From COSSAN Wiki
Device not found on DELL laptops
If your bluetooth device can not be found under linux please check
- the BT switch is activated.
- You should be able to turn it back on by running these commands generally:
sudo hid2hci --tohci sudo dellWirelessCtl --sw_bt 1 --bt 1
Check if the BT device is on:
To scan the bluetooth devices persent use the following command