我正在尝试在使用蓝牙适配器的机器上使用蓝牙。它在 Windows 7 中运行良好，但在 Ubuntu 中遇到了问题。
当我进入系统设置并转到蓝牙时，蓝牙处于关闭状态并显示“蓝牙已禁用”。当我单击蓝牙开关时，蓝牙显示已打开，但在下面的框中仍显示“蓝牙已禁用”。如果我退出系统设置并返回，蓝牙开关已恢复为关闭状态。尽管已选中该复选框，但菜单栏中没有蓝牙状态。
输出系统盘：
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 002: ID 045e:0779 Microsoft Corp. LifeCam HD-3000
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 04b4:0101 Cypress Semiconductor Corp. Keyboard/Hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 011 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 010 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 009 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 008 Device 003: ID 0930:6544 Toshiba Corp. TransMemory-Mini / Kingston DataTraveler 2.0 Stick (2GB)
Bus 008 Device 002: ID 1bcf:0005 Sunplus Innovation Technology Inc. Optical Mouse
Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
输出usb 设备 | awk '/0a12/' RS=：
T: Bus=04 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0a12 ProdID=0001 Rev=88.91
S: Product=CSR8510 A10
C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
输出dmesg | grep -i blue：
[ 9.645397] Bluetooth: Core ver 2.21
[ 9.645413] Bluetooth: HCI device and connection manager initialized
[ 9.645417] Bluetooth: HCI socket layer initialized
[ 9.645419] Bluetooth: L2CAP socket layer initialized
[ 9.645423] Bluetooth: SCO socket layer initialized
[ 11.642640] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 11.642643] Bluetooth: BNEP filters: protocol multicast
[ 11.642648] Bluetooth: BNEP socket layer initialized
[ 11.794252] Bluetooth: hci0 command 0x1009 tx timeout