Dell insprion 1520 12.04（内核 3.2.0-34 通用）中蓝牙开启问题

Question

我有一台戴尔 inspiron 1520 笔记本电脑，并在其中安装了 12.04 Ubuntu，我试图打开系统上的蓝牙设备，在通知栏中显示，蓝牙已打开，而在系统设置>蓝牙下显示蓝牙已禁用，设置中的软按钮没有响应。

任何帮助将非常感激。

以下是一些有助于解决问题的命令及其输出。

sheetal@sheetal-Inspiron-1520:~$ hcitool dev
Devices :

sheetal@sheetal-Inspiron-1520:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 05a9:2640 OmniVision Technologies, Inc. OV2640 Webcam
Bus 003 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 003 Device 003: ID 0a5c:4502 Broadcom Corp. Keyboard (Boot Interface Subclass)
Bus 003 Device 004: ID 0a5c:4503 Broadcom Corp. Mouse (Boot Interface Subclass)

sheetal@sheetal-Inspiron-1520:~$ rfkill list
0: dell-wifi: Wireless LAN
     Soft blocked: no
     Hard blocked: no
1: dell-bluetooth: Bluetooth
     Soft blocked: no
     Hard blocked: no
2: phy0: Wireless LAN
     Soft blocked: no
     Hard blocked: no

sheetal@sheetal-Inspiron-1520:~$ dpkg --get-selections
blueman                install
bluetooth              install
bluez                  install
bluez-alsa             install
bluez-cups             install
bluez-gstreamer        install

sheetal@sheetal-Inspiron-1520:~$ ps -el | grep blue
5 S     0  1052     1  0  80   0 -  1185 poll_s ?        00:00:00 bluetoothd

sheetal@sheetal-Inspiron-1520:~$ lsmod | grep blue
bluetooth             158438  10 bnep,rfcomm