bluez5：无法连接到 Ubuntu 17.10 上的配对蓝牙设备

Question

我在 Ubuntu 17.10 上使用 bluez v5.46，但无法连接到配对的蓝牙设备。

这是bluetoothctl命令的输出：

$ bluetoothctl 
[NEW] Controller 6C:0B:84:27:43:66 tensorFlowPHY [default]
Agent registered
[bluetooth]# scan on
Discovery started
[CHG] Controller 6C:0B:84:27:43:66 Discovering: yes
[NEW] Device FC:58:FA:A1:C2:70 OE-P51
[bluetooth]# pair FC:58:FA:A1:C2:70 
Attempting to pair with FC:58:FA:A1:C2:70
[CHG] Device FC:58:FA:A1:C2:70 Connected: yes
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: yes
[CHG] Device FC:58:FA:A1:C2:70 Paired: yes
Pairing successful
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: no
[CHG] Device FC:58:FA:A1:C2:70 Connected: no
[CHG] Controller 6C:0B:84:27:43:66 Discoverable: no
[bluetooth]# connect FC:58:FA:A1:C2:70 
Attempting to connect to FC:58:FA:A1:C2:70
Failed to connect: org.bluez.Error.Failed

这里有更多信息：

$ journalctl -u bluetooth | tail
Mar 29 12:06:01 tensorFlowPHY systemd[1]: Started Bluetooth service.
Mar 29 12:06:01 tensorFlowPHY bluetoothd[1136]: Starting SDP server
Mar 29 12:06:01 tensorFlowPHY bluetoothd[1136]: Bluetooth management interface 1.14 initialized
Mar 29 14:36:12 tensorFlowPHY bluetoothd[1136]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available
Mar 29 14:36:59 tensorFlowPHY bluetoothd[1136]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available

并systemctl说：

$ systemctl status bluetooth
? bluetooth.service - Bluetooth service
   Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2018-03-30 16:30:15 CEST; 21s ago
     Docs: man:bluetoothd(8)
 Main PID: 1492 (bluetoothd)
   Status: "Running"
    Tasks: 1 (limit: 4915)
   Memory: 1.5M
      CPU: 42ms
   CGroup: /system.slice/bluetooth.service
           ??1492 /usr/lib/bluetooth/bluetoothd

Mar 30 16:30:15 tensorFlowPHY systemd[1]: Starting Bluetooth service...
Mar 30 16:30:15 tensorFlowPHY bluetoothd[1492]: Bluetooth daemon 5.46
Mar 30 16:30:15 tensorFlowPHY systemd[1]: Started Bluetooth service.
Mar 30 16:30:15 tensorFlowPHY bluetoothd[1492]: Starting SDP server
Mar 30 16:30:15 tensorFlowPHY bluetoothd[1492]: Bluetooth management interface 1.14 initialized
Mar 30 16:30:20 tensorFlowPHY bluetoothd[1492]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available
Mar 30 16:30:31 tensorFlowPHY bluetoothd[1492]: a2dp-sink profile connect failed for FC:58:FA:A1:C2:70: Protocol not available

编辑 1：我安装了一个丢失的 Ubuntu 软件包：pulseaudio-module-bluetooth并使用以下命令重新启动了pulseaudio：pulseaudio -k

现在连接试用后蓝牙日志的输出是：

Mar 30 16:36:59 tensorFlowPHY bluetoothd[1492]: Unable to get connect data for Headset Voice gateway: getpeername: Transport endpoint is not connected (107)
Mar 30 16:37:00 tensorFlowPHY bluetoothd[1492]: connect error: Connection refused (111)
Mar 30 16:37:02 tensorFlowPHY bluetoothd[1492]: connect error: Connection refused (111)

知道为什么吗？

编辑 2：我刚刚按照某人的要求重新启动了 Ubuntu。仍然有相同的pb。

编辑 3：我已经加载了两个模块/etc/pulse/default.pa：

$ egrep "(policy|discover)" /etc/pulse/default.pa
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover

但是我在硬盘上找不到那些，我需要安装其他东西吗？

编辑 4：我的错误，我使用了locate命令。在 a 之后sudo updatedb，该locate命令现在能够找到这 2 个文件。

编辑 5：这是pactl输出：

$ pactl list modules | grep "Name:"
    Name: module-device-restore
    Name: module-stream-restore
    Name: module-card-restore
    Name: module-augment-properties
    Name: module-switch-on-port-available
    Name: module-udev-detect
    Name: module-alsa-card
    Name: module-alsa-card
    Name: module-bluetooth-policy
    Name: module-bluetooth-discover
    Name: module-bluez5-discover
    Name: module-native-protocol-unix
    Name: module-default-device-restore
    Name: module-rescue-streams
    Name: module-always-sink
    Name: module-intended-roles
    Name: module-suspend-on-idle
    Name: module-console-kit
    Name: module-systemd-login
    Name: module-position-event-sounds
    Name: module-role-cork
    Name: module-filter-heuristics
    Name: module-filter-apply
    Name: module-switch-on-connect
    Name: module-x11-publish
    Name: module-x11-cork-request
    Name: module-x11-xsmp

和dpkg -l输出：

$ dpkg -l | grep blue
ii  bluefish                                  2.2.9-1                                                    amd64        advanced Gtk+ text editor for web and software development
ii  bluefish-data                             2.2.9-1                                                    all          advanced Gtk+ text editor (data)
ii  bluefish-plugins                          2.2.9-1                                                    amd64        advanced Gtk+ text editor (plugins)
ii  blueman                                   2.0.4-1ubuntu3                                             amd64        Graphical bluetooth manager
ii  bluez                                     5.46-0ubuntu3                                              amd64        Bluetooth tools and daemons
ii  bluez-cups                                5.46-0ubuntu3                                              amd64        Bluetooth printer driver for CUPS
ii  bluez-obexd                               5.46-0ubuntu3                                              amd64        bluez obex daemon
ii  bluez-tools                               0.2.0~20140808-5build1                                     amd64        Set of tools to manage Bluetooth devices for linux
ii  gnome-bluetooth                           3.26.1-1                                                   amd64        GNOME Bluetooth tools
ii  indicator-bluetooth                       0.0.6+17.10.20170605-0ubuntu3                              amd64        System bluetooth indicator.
ii  libbluetooth3:amd64                       5.46-0ubuntu3                                              amd64        Library to use the BlueZ Linux Bluetooth stack
ii  libgnome-bluetooth13:amd64                3.26.1-1                                                   amd64        GNOME Bluetooth tools - support library
ii  pulseaudio-module-bluetooth               1:10.0-2ubuntu3.1                                          amd64        Bluetooth module for PulseAudio sound server

这是加载的蓝牙脉冲音频模块：

$ pactl list modules short | grep module-bluetooth
9   module-bluetooth-policy     
10  module-bluetooth-discover

编辑 6：您的解决方案有效！所以总结一下：

$ bluetoothctl
[bluetooth]# power on
Changing power on succeeded
[CHG] Controller 6C:0B:84:27:43:66 Powered: yes
[bluetooth]# remove FC:58:FA:A1:C2:70
[DEL] Device FC:58:FA:A1:C2:70 OE-P51
Device has been removed
[bluetooth]# exit
Agent unregistered
[DEL] Controller 6C:0B:84:27:43:66 tensorFlowPHY [default]
$ sudo service bluetooth restart

最后：

$ bluetoothctl
[NEW] Controller 6C:0B:84:27:43:66 tensorFlowPHY [default]
Agent registered
[bluetooth]# power on
Changing power on succeeded
[CHG] Controller 6C:0B:84:27:43:66 Powered: yes
[bluetooth]# scan on
Discovery started
[CHG] Controller 6C:0B:84:27:43:66 Discovering: yes
[NEW] Device FC:58:FA:A1:C2:70 OE-P51
[bluetooth]# pair FC:58:FA:A1:C2:70 
Attempting to pair with FC:58:FA:A1:C2:70
[CHG] Device FC:58:FA:A1:C2:70 Connected: yes
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: yes
[CHG] Device FC:58:FA:A1:C2:70 Paired: yes
Pairing successful
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: no
[CHG] Device FC:58:FA:A1:C2:70 Connected: no
[bluetooth]# connect FC:58:FA:A1:C2:70 
Attempting to connect to FC:58:FA:A1:C2:70
[CHG] Device FC:58:FA:A1:C2:70 Connected: yes
Connection successful
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:58:FA:A1:C2:70 ServicesResolved: yes
[OE-P51]#

Answer 1

从Arch wiki，配对有效，但连接无效，部分：

这可能是由于未安装pulseaudio-bluetooth 包。如果丢失，请安装它，然后重新启动pulseaudio。

但是pulseaudio-bluetooth包的名称pulseaudio-module-bluetooth在 Ubuntu 上。

所以你的问题应该在安装后解决：

sudo apt install pulseaudio-module-bluetooth

安装此软件包后，重新启动系统以加载一些脉冲音频模块，例如module-bluetooth-policy和module-bluetooth-discover。

更新：

但如果仍然如此，您会在重新启动后收到以下消息：

连接错误：连接被拒绝 (111)

根据这个答案，您应该将这些行添加到/etc/pulse/default.pa文件中。（如果不存在）：

load-module module-bluetooth-policy
load-module module-bluetooth-discover

但是默认情况下这些行应该存在，并且在重新启动系统后，应该加载这些模块。

更新2：

根据Arch wiki 上的这篇文章：

这可能是因为您已经使用相同的蓝牙适配器将设备与另一个操作系统配对（例如，双启动）。某些设备无法处理与同一 MAC 地址（即蓝牙适配器）相关联的多个配对。您可以通过重新配对设备来解决此问题

因此，请使用此命令重新配对您的设备（或者您可以使用 GUI 方法）：

第一次运行：

bluetoothctl

然后使用此命令显示配对设备：

devices

这应该有一些像这样的输出：

Device XX:XX:XX:XX:XX:XX Device Name

然后使用以下命令删除配对设备：

remove XX:XX:XX:XX:XX:XX

并重启蓝牙服务：

sudo service bluetooth restart

然后再次尝试配对设备。