这里的问题是，蓝牙曾经可以工作。它根本不再起作用，我不确定为什么。当我进入系统设置并尝试启用时，它只是将小开关滑回禁用状态。在 Ubuntu 14.04 上禁用蓝牙中sudo hciconfig hci0 reset列出的尝试返回。Can't init device hci0: Connection timed out (110)
rfkill 列表返回：
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
lspci -nnk 返回：
00:00.0 Host bridge [0600]: Intel Corporation 4th Gen Core Processor DRAM Controller [8086:0c00] (rev 06)
Subsystem: Gigabyte Technology Co., Ltd 4th Gen Core Processor DRAM Controller [1458:5000]
Kernel driver in use: hsw_uncore
00:02.0 VGA compatible controller …