我在运行 Core 16 的 Rasberry Pi 3 上看不到任何蓝牙控制器。
已安装的快照：
Name Version Rev Developer Notes
bluez 5.37-2 12 canonical -
core 16.04.1 645 canonical -
docker 1.11.2-9 59 canonical -
hello 2.10 24 canonical -
network-manager 1.2.2-10 72 canonical -
pi2-kernel 4.4.0-1030-3 22 canonical -
pi3 16.04-0.5 6 canonical -
snapweb 0.21.2 25 canonical -
wifi-ap 9 28 canonical -
wireless-tools 2 9 canonical -
蓝牙控制命令输出：
sudo bluez.bluetoothctl -a
Agent registered
[bluetooth]# list
[bluetooth]#
什么也没得到。未找到或列出控制器。
在日志中查找任何与蓝牙相关的内容，似乎硬件就在那里，但是 apparmor 可能阻止了该快照。
sudo grep -i tooth /var/log/syslog
Dec 14 15:47:58 localhost kernel: [149278.605497] audit: type=1400 audit(1481730478.267:95): apparmor="DENIED" operation="capable" profile="snap.bluez.bluetoothctl" pid=5827 comm="bluetoothctl" capability=1 capname="dac_override"
Dec 14 15:47:58 localhost kernel: [149278.605549] audit: type=1400 audit(1481730478.267:96): apparmor="DENIED" operation="capable" profile="snap.bluez.bluetoothctl" pid=5827 comm="bluetoothctl" capability=2 capname="dac_read_search"
Nov 2 14:54:16 localhost kernel: [ 21.892285] audit: type=1400 audit(1478098451.155:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="snap.bluez.bluetoothctl" pid=1100 comm="apparmor_parser"
Dec 14 16:11:39 localhost kernel: [ 44.142418] Bluetooth: Core ver 2.21
Dec 14 16:11:39 localhost kernel: [ 44.142559] Bluetooth: HCI device and connection manager initialized
Dec 14 16:11:39 localhost kernel: [ 44.142587] Bluetooth: HCI socket layer initialized
Dec 14 16:11:39 localhost kernel: [ 44.142607] Bluetooth: L2CAP socket layer initialized
Dec 14 16:11:39 localhost kernel: [ 44.142648] Bluetooth: SCO socket layer initialized
Dec 14 16:11:39 localhost bluetoothd[1319]: Bluetooth daemon 5.37
Dec 14 16:11:39 localhost bluetoothd[1319]: Starting SDP server
Dec 14 16:11:39 localhost kernel: [ 44.256492] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
Dec 14 16:11:39 localhost kernel: [ 44.256516] Bluetooth: BNEP filters: protocol multicast
Dec 14 16:11:39 localhost kernel: [ 44.256542] Bluetooth: BNEP socket layer initialized
Dec 14 16:11:39 localhost bluetoothd[1319]: Bluetooth management interface 1.10 initialized
这是我有点迷失的地方，并且想知道解决这个问题的下一步是什么；我该如何进行？