christoph@christoph-dell:~$ dmesg | grep -i blue
[    3.685247] Bluetooth: Core ver 2.19
[    3.685261] Bluetooth: HCI device and connection manager initialized
[    3.685267] Bluetooth: HCI socket layer initialized
[    3.685269] Bluetooth: L2CAP socket layer initialized
[    3.685276] Bluetooth: SCO socket layer initialized
[    3.715906] bluetooth hci0: Direct firmware load failed with error -2
[    3.715909] bluetooth hci0: Falling back to user helper
[    3.755136] Bluetooth: hci0: BCM: patch brcm/BCM20702A0-0a5c-216f.hcd not found
[    3.852035] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    3.852038] Bluetooth: BNEP filters: protocol multicast
[    3.852045] Bluetooth: BNEP socket layer initialized
[    3.865887] Bluetooth: RFCOMM TTY layer initialized
[    3.865896] Bluetooth: RFCOMM socket layer initialized
[    3.865901] Bluetooth: RFCOMM ver 1.11