ali@TM2420:~$ dmesg | grep Blue
[   39.760000] Bluetooth: Core ver 2.11
[   39.760000] Bluetooth: HCI device and connection manager initialized
[   39.764000] Bluetooth: HCI socket layer initialized
[   39.796000] Bluetooth: L2CAP ver 2.8
[   39.796000] Bluetooth: L2CAP socket layer initialized
[   39.916000] Bluetooth: RFCOMM socket layer initialized
[   39.916000] Bluetooth: RFCOMM TTY layer initialized
[   39.916000] Bluetooth: RFCOMM ver 1.8