在Raspberry PI 3 B+上找不到蓝牙设备- Ubuntu
在Raspberry PI 3 B+上找不到蓝牙设备- Ubuntu
提问于 2019-07-06 21:42:35
当我安装bluez快照并使用hcitool时，我没有看到任何蓝牙设备，这没有任何结果：
$ sudo hcitool dev
Devices:
$或者蓝宝石：
$ sudo bluetoothctl
Agent registered
[bluetooth]# list
[bluetooth]# show
No default controller available
[bluetooth]#当我使用hc共图时，我得到了拒绝权限的错误：
$ sudo hc共图无法打开HCI套接字。：权限被拒绝$
我在dmesg中看到了以下消息，这些消息表明AppArmor正在拒绝尝试：
21346.997174] audit: type=1400 audit(1562448858.001:1396): apparmor="DENIED" operation="create" profile="snap.bluez.hcitool" pid=6030 comm="hcitool" family="bluetooth" sock_type="raw" protocol=1 requested_mask="create" denied_mask="create我需要做什么才能启用蓝牙设备，找到设备Id，并能够扫描新设备。
我手动连接了snap:用于bluez和蓝牙控制的即插即用，现在有以下连接：
$ snap connections
Interface Plug Slot Notes
bluetooth-control bledetect101:bluetooth-control :bluetooth-control manual
bluetooth-control bluez:bluetooth-control :bluetooth-control manual
bluetooth-control hidra-ble-gateway:bluetooth-control :bluetooth-control manual
bluez bluez:client bluez:service -
network bledetect101:network :network -
network hidra-ble-gateway:network :network -
uhid bluez:uhid :uhid -
$在此运行之后，bluez.hciconfig将显示蓝牙设备：
$ sudo hciconfig dev
hci0: Type: Primary Bus: SDIO
BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:0 acl:0 sco:0 events:0 errors:0
TX bytes:0 acl:0 sco:0 commands:0 errors:0 但是，这将显示为down，并且尝试将其打开或重置它失败：
$ sudo hciconfig hci0 up
Can't init device hci0: Input/output error (5)
$ sudo hciconfig hci0 reset
Can't init device hci0: Input/output error (5)
$有什么想法吗？如前所述，这是在运行UbuntuCore18.04的RPI3 B+上实现的。未命名-a的输出：
Linux localhost 4.15.0-1040-raspi2 #43-Ubuntu SMP PREEMPT Tue Jun 25 10:45:04 UTC 2019 armv7l armv7l armv7l GNU/Linux添加dmesg输出：
$ dmesg | grep -i 'bluetooth'
[ 10.291904] Bluetooth: Core ver 2.21
[ 10.291982] Bluetooth: HCI device and connection manager initialized
[ 10.292000] Bluetooth: HCI socket layer initialized
[ 10.292013] Bluetooth: L2CAP socket layer initialized
[ 10.292036] Bluetooth: SCO socket layer initialized
[ 10.305326] Bluetooth: Generic Bluetooth SDIO driver ver 0.1
[ 14.254238] audit: type=1400 audit(1562690889.887:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="snap.bluez.bluetoothctl" pid=949 comm="apparmor_parser"
[ 17.377691] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 17.377713] Bluetooth: BNEP filters: protocol multicast
[ 17.377736] Bluetooth: BNEP socket layer initialized
[ 834.534698] audit: type=1400 audit(1562691819.528:25): apparmor="DENIED" operation="create" profile="snap.bluez.hciconfig" pid=1639 comm="hciconfig" family="bluetooth" sock_type="raw" protocol=1 requested_mask="create" denied_mask="create"
[ 839.183488] audit: type=1400 audit(1562691824.176:26): apparmor="DENIED" operation="create" profile="snap.bluez.hciconfig" pid=1660 comm="hciconfig" family="bluetooth" sock_type="raw" protocol=1 requested_mask="create" denied_mask="create"
[ 845.163961] audit: type=1400 audit(1562691830.156:27): apparmor="DENIED" operation="create" profile="snap.bluez.hciconfig" pid=1681 comm="hciconfig" family="bluetooth" sock_type="raw" protocol=1 requested_mask="create" denied_mask="create"
[ 852.587936] audit: type=1400 audit(1562691837.580:28): apparmor="DENIED" operation="create" profile="snap.bluez.hciconfig" pid=1702 comm="hciconfig" family="bluetooth" sock_type="raw" protocol=1 requested_mask="create" denied_mask="create"
[ 1115.767865] audit: type=1400 audit(1562692100.757:48): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="snap.bluez.bluetoothctl" pid=2506 comm="apparmor_parser"
[ 1219.232771] audit: type=1400 audit(1562692204.225:67): apparmor="DENIED" operation="create" profile="snap.bledetect101.bledetect-cli" pid=2867 comm="bledetect" family="bluetooth" sock_type="raw" protocol=1 requested_mask="create" denied_mask="create"
[ 1219.232819] audit: type=1400 audit(1562692204.225:68): apparmor="DENIED" operation="create" profile="snap.bledetect101.bledetect-cli" pid=2867 comm="bledetect" family="bluetooth" sock_type="raw" protocol=1 requested_mask="create" denied_mask="create"回答 1
Ask Ubuntu用户
发布于 2019-08-19 12:59:18
有一个错误，它使用错误的固件dir。作为临时修复，您可以使用以下命令：
sudo ln -s /lib/firmware /etc/firmware要检查它，您可以使用
sudo hciattach /dev/ttyAMA0 bcm43xx 921600 -页面原文内容由Ask Ubuntu提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://askubuntu.com/questions/1156466
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