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蓝牙已打开，但无法扫描 Ubuntu 16.04 上的任何设备

tag-icon • tag-icon sound 16.04 bluetooth
蓝牙已打开，但无法扫描 Ubuntu 16.04 上的任何设备

不久前，我刚刚全新安装了 Ubuntu 16.04，并且一直在无缝使用我的蓝牙耳机。然而，在最近的系统更新后，蓝牙变得混乱。它显示它已启用且可见（可以在其他蓝牙设备上扫描和查看笔记本电脑），但当我尝试添加蓝牙设备时，扫描中没有显示任何蓝牙设备。

我尝试过重启笔记本电脑/重新安装 bluez 等，但问题仍然存在。如果有人能帮助我，我将不胜感激。

多谢！

阿特雷亚

我还假定我必须在问题中包含以下信息：

lspci -nnk | grep -iA2 net; lsusb; lsmod | grep blue; rfkill list all; dmesg | egrep -i 'blue|firm'
03:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
    Subsystem: AzureWave AR9485 Wireless Network Adapter [1a3b:2c97]
    Kernel driver in use: ath9k
    Kernel modules: ath9k
--
04:00.2 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0a)
    Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:1447]
    Kernel driver in use: r8169
    Kernel modules: r8169
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 13d3:5710 IMC Networks UVC VGA Webcam
Bus 001 Device 003: ID 13d3:3362 IMC Networks Atheros AR3012 Bluetooth 4.0 Adapter
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
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 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
bluetooth             520192  40 bnep,ath3k,btbcm,btrtl,btusb,rfcomm,btintel
0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: asus-wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: asus-bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
[    0.282831] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[    1.979268] usb 1-1.1: Product: Bluetooth USB Host Controller
[    2.228981] psmouse serio4: elantech: assuming hardware version 4 (with firmware version 0x361f02)
[   11.866226] Bluetooth: Core ver 2.21
[   11.866244] Bluetooth: HCI device and connection manager initialized
[   11.866248] Bluetooth: HCI socket layer initialized
[   11.866250] Bluetooth: L2CAP socket layer initialized
[   11.866255] Bluetooth: SCO socket layer initialized
[   25.674179] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   25.674183] Bluetooth: BNEP filters: protocol multicast
[   25.674187] Bluetooth: BNEP socket layer initialized
[   55.996025] Bluetooth: RFCOMM TTY layer initialized
[   55.996033] Bluetooth: RFCOMM socket layer initialized
[   55.996037] Bluetooth: RFCOMM ver 1.11

答案1

解决方法是打开终端然后输入 

bluetoothctl
这将在终端中打开蓝牙控制，然后输入命令为蓝牙设备供电 
power on
最后打开扫描 
scan on

如果需要更多命令，请输入help

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