升级到 ubuntu 16.04 后，我无法在笔记本电脑上打开蓝牙。尝试重新安装 bluez 和其他蓝牙应用程序（与 blueman 和蓝牙相同），但无法解决问题
服务蓝牙状态
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2016-05-15 10:14:59 IRDT; 5h 40min ago
Docs: man:bluetoothd(8)
Main PID: 1104 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 512)
CGroup: /system.slice/bluetooth.service
└─1104 /usr/lib/bluetooth/bluetoothd
May 15 10:15:03 morteza-CX61-2PC bluetoothd[1104]: Not enough free handles to register service
May 15 10:15:03 morteza-CX61-2PC bluetoothd[1104]: Not enough free handles to register service
May 15 10:15:03 morteza-CX61-2PC bluetoothd[1104]: Sap driver initialization failed.
May 15 10:15:03 morteza-CX61-2PC bluetoothd[1104]: sap-server: Operation not permitted (1)
May 15 10:15:04 morteza-CX61-2PC bluetoothd[1104]: Loading LTKs timed out for hci0
May 15 10:15:41 morteza-CX61-2PC bluetoothd[1104]: Failed to set mode: Not Powered (0x0f)
May 15 10:15:41 morteza-CX61-2PC bluetoothd[1104]: Failed to get connections: Not Powered (0x0f)
May 15 10:16:52 morteza-CX61-2PC bluetoothd[1104]: Failed to set mode: Failed (0x03)
May 15 10:17:02 morteza-CX61-2PC bluetoothd[1104]: Failed to set mode: Failed (0x03)
May 15 14:13:45 morteza-CX61-2PC bluetoothd[1104]: Failed to set mode: Failed (0x03)
系统盘
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 13d3:3394 IMC Networks Bluetooth
Bus 003 Device 003: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
rfkill 列表
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
1: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
当我进入设置并选择蓝牙时显示“未找到蓝牙”截图：http://storage6.static.itmages.com/i/16/0515/h_1463312053_7827113_7a4e2df260.png
dmesg | egrep -i 'blue|firm'
[ 0.147244] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 0.816454] [Firmware Bug]: ACPI(PEGP) defines _DOD but not _DOS
[ 1.761166] usb 3-7: Product: RT Bluetooth Radio
[ 1.776032] psmouse serio1: elantech: assuming hardware version 3 (with firmware version 0x550f00)
[ 15.773162] Using firmware rtlwifi/rtl8723fw_B.bin
[ 18.901441] Bluetooth: Core ver 2.21
[ 18.901451] Bluetooth: HCI device and connection manager initialized
[ 18.901454] Bluetooth: HCI socket layer initialized
[ 18.901455] Bluetooth: L2CAP socket layer initialized
[ 18.901459] Bluetooth: SCO socket layer initialized
[ 19.093565] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=1200
[ 19.093568] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723a_fw.bin
[ 40.996583] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 40.996585] Bluetooth: BNEP filters: protocol multicast
[ 40.996588] Bluetooth: BNEP socket layer initialized
[ 41.247665] Bluetooth: RFCOMM TTY layer initialized
[ 41.247670] Bluetooth: RFCOMM socket layer initialized
[ 41.247673] Bluetooth: RFCOMM ver 1.11
[ 42.998956] Bluetooth: hci0 command 0x0c56 tx timeout
[ 102.826854] Bluetooth: hci0 urb ffff8800c6322d80 failed to resubmit (113)
[ 112.790161] Bluetooth: hci0 urb ffff8800a66bf240 failed to resubmit (113)
当我尝试在 blueman 软件中搜索设备时收到此错误
Resource Not Ready
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/blueman/bluez/errors.py", line 146, in warp
return func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/blueman/bluez/Adapter.py", line 135, in start_discovery
self.get_interface().StartDiscovery()
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
**keywords)
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.bluez.Error.NotReady: Resource Not Ready
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/blueman-manager", line 210, in inquiry
self.List.DiscoverDevices()
File "/usr/lib/python3/dist-packages/blueman/gui/DeviceList.py", line 401, in DiscoverDevices
self.Adapter.start_discovery()
File "/usr/lib/python3/dist-packages/blueman/bluez/errors.py", line 148, in warp
raise parse_dbus_error(exception)
blueman.bluez.errors.DBusNotReadyError: Resource Not Ready
当我尝试从终端弹出错误消息重新启动蓝牙服务时，内容如下
Connection to BlueZ failed
Bluez daemon is not running, blueman-manager cannot continue.
This probably means that there were no Bluetooth adapters detected or Bluetooth daemon was not started.
答案1
您可以尝试重新安装蓝牙：
sudo apt-get purge bluetooth
sudo apt-get install bluetooth
这对我有用。
答案2
以下是对我有用的方法（从冷启动开始）
sudo hciconfig -a hci0
sudo hciconfig hci0 down
sudo hciconfig hci0 up
sudo hciconfig -a hci0
看起来 xenial 和 ubuntu 蓝牙很烂（至少与我妻子的 Windows 设置相比）。
使用 HP 17 30 秒到 2 分钟后，距离笔记本电脑不到 1 米的耳机仍会断开蓝牙连接。其他设备没有这个问题，但我已经将 m-pci-e 卡更换了两次，现在两个不同的硬件板都出现了同样的问题。