root@grimoire:~# dmesg | grep -i bluetooth
[   33.141564] Bluetooth: Core ver 2.19
[   33.141671] Bluetooth: HCI device and connection manager initialized
[   33.141700] Bluetooth: HCI socket layer initialized
[   33.141718] Bluetooth: L2CAP socket layer initialized
[   33.141794] Bluetooth: SCO socket layer initialized
[   33.235341] Bluetooth: Loading patch file failed
[   48.003269] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   48.003286] Bluetooth: BNEP filters: protocol multicast
[   48.003318] Bluetooth: BNEP socket layer initialized
[   98.484127] Bluetooth: RFCOMM TTY layer initialized
[   98.484169] Bluetooth: RFCOMM socket layer initialized
[   98.484204] Bluetooth: RFCOMM ver 1.11