我最近在 Compaq Presario C504EA 上安装了 Ubuntu 14.04 LTS（擦除了旧的 Windows Vista 安装），并且我正在尝试启用蓝牙。
我查看了 rfkill list all，结果如下：
0: hp-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hp-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
当你打开系统设置 | 蓝牙，它表示Bluetooth is disabled蓝牙是否处于打开或关闭状态。
编辑：结果uname -a; dmesg | egrep -i 'blue|firm'
rob@rob-Presario-C500-RT154EA-ABU:~$ uname -a; dmesg | egrep -i 'blue|firm'
Linux rob-Presario-C500-RT154EA-ABU 4.2.0-36-generic #42~14.04.1-Ubuntu SMP Fri May 13 17:30:34 UTC 2016 i686 i686 i686 GNU/Linux
[ 0.103205] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 22.560190] Bluetooth: Core ver 2.20
[ 22.560311] Bluetooth: HCI device and connection manager initialized
[ 22.560319] Bluetooth: HCI socket layer initialized
[ 22.560324] Bluetooth: L2CAP socket layer initialized
[ 22.560334] Bluetooth: SCO socket layer initialized
[ 22.668875] Bluetooth: RFCOMM TTY layer initialized
[ 22.668892] Bluetooth: RFCOMM socket layer initialized
[ 22.668900] Bluetooth: RFCOMM ver 1.11
[ 22.788640] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 22.788647] Bluetooth: BNEP filters: protocol multicast
[ 22.788656] Bluetooth: BNEP socket layer initialized
[ 31.878953] b43-phy0: Loading firmware version 666.2 (2011-02-23 01:15:07)
结果lsusb：
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
有什么想法吗？非常感谢
答案1
在查看uname -a; lsusb; dmesg | egrep -i 'blue|firm'和lshw终端时，没有提到蓝牙功能，因此看起来 Compaq Presario C504EA 是未启用蓝牙的型号之一。