我的 Easynote LS 显示“未找到蓝牙适配器”

Question

Easynote LS 笔记本电脑搭载 Ubuntu 16.04。

我收到以下错误：

未找到蓝牙适配器

跑步：

rfkill list

结果：

0: acer-wireless: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: brcmwl-0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

我读过其他有关此问题的帖子，但它们似乎都与戴尔、惠普或其他设备有关

我应该怎么办？

编辑：添加了结果lsusb；dmesg | egrep -i'blue|firm'

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 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 001 Device 007: ID 064e:c21c Suyin Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub