Comment 27 for bug 1674509

the respective lines from dmesg:

[ 32.367423] Bluetooth: Core ver 2.21
[ 32.367486] NET: Registered protocol family 31
[ 32.367491] Bluetooth: HCI device and connection manager initialized
[ 32.367509] Bluetooth: HCI socket layer initialized
[ 32.367521] Bluetooth: L2CAP socket layer initialized
[ 32.367544] Bluetooth: SCO socket layer initialized
[ 32.400549] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 32.400565] Bluetooth: BNEP filters: protocol multicast
[ 32.400583] Bluetooth: BNEP socket layer initialized
[ 54.875017] audit: type=1400 audit(1491234097.112:36): apparmor="ALLOWED" operation="open" profile="snap.bluez.hciattach" name="/dev/ttyAMA0" pid=1311 comm="hciattach" requested_mask="wr" denied_mask="wr" fsuid=0 ouid=0
[ 54.875348] uart-pl011 3f201000.uart: no DMA platform data
[ 59.299551] Bluetooth: HCI UART driver ver 2.3
[ 59.299569] Bluetooth: HCI UART protocol H4 registered
[ 59.299574] Bluetooth: HCI UART protocol BCSP registered
[ 59.299579] Bluetooth: HCI UART protocol LL registered
[ 59.299583] Bluetooth: HCI UART protocol ATH3K registered
[ 59.299588] Bluetooth: HCI UART protocol Three-wire (H5) registered
[ 59.299751] Bluetooth: HCI UART protocol Intel registered
[ 59.299816] Bluetooth: HCI UART protocol BCM registered
[ 59.299821] Bluetooth: HCI UART protocol QCA registered
[ 59.376975] Bluetooth: RFCOMM TTY layer initialized
[ 59.377009] Bluetooth: RFCOMM socket layer initialized
[ 59.377041] Bluetooth: RFCOMM ver 1.11