我最近安装了 Ubuntu 16.04.1 版本，之后蓝牙应用程序选项变灰，无法打开蓝牙或连接设备。
我跑了
sudo nano /etc/bluetooth/main.conf
并将其更改#AutoEnable=false为AutoEnable=true文件底部，然后运行
sudo service /etc/init.d/bluetooth restart
我也尝试了蓝牙重启服务。
sudo service bluetooth status
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor
preset: enabled)
Active: active (running) since Sun 2017-10-15 13:43:24 IST; 5h 4min ago
Docs: man:bluetoothd(8)
Main PID: 4666 (bluetoothd)
Status: "Running"
CGroup: /system.slice/bluetooth.service
└─4666 /usr/lib/bluetooth/bluetoothd
Oct 15 13:43:24 prakash-HP-Pavilion-15-Notebook-PC systemd[1]: Starting
Bluetooth service...
Oct 15 13:43:24 prakash-HP-Pavilion-15-Notebook-PC bluetoothd[4666]:
Bluetooth daemon 5.37
Oct 15 13:43:24 prakash-HP-Pavilion-15-Notebook-PC systemd[1]: Started
Bluetooth service.
Oct 15 13:43:24 prakash-HP-Pavilion-15-Notebook-PC bluetoothd[4666]:
Starting SDP server
Oct 15 13:43:24 prakash-HP-Pavilion-15-Notebook-PC bluetoothd[4666]:
Bluetooth management interface 1.14 initialized