我使用的是联想 Yoga 2 Pro，系统是 Ubuntu Gnome。我记得我一开始在这台笔记本上使用的是 14.10 版本，后来不断升级，现在使用的是 17.04 版本。一直以来，我都无法舒服地使用蓝牙设备。
当我进行冷启动时，我让它们工作 - 通常是耳机、鼠标和键盘中的一个或两个 - 但它们通常在几分钟后停止。似乎没有设置超时，尽管如果超时与不活动有关，我不能完全排除这种可能性。我相信我浏览了网上的大多数答案，但找不到解决方案。
sudo service bluetooth status：
bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor prese
Active: active (running) since Mon 2017-05-15 09:46:39 EDT; 2h 0min ago
Docs: man:bluetoothd(8)
Main PID: 1672 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 4915)
CGroup: /system.slice/bluetooth.service
└─1672 /usr/lib/bluetooth/bluetoothd
May 15 11:22:38 Sencer bluetoothd[1672]: Can't get HIDP connection info
May 15 11:22:38 Sencer bluetoothd[1672]: connect: No route to host (113)
May 15 11:23:08 Sencer bluetoothd[1672]: Can't get HIDP connection info
May 15 11:23:08 Sencer bluetoothd[1672]: connect: No route to host (113)
May 15 11:23:38 Sencer bluetoothd[1672]: Can't get HIDP connection info
May 15 11:23:38 Sencer bluetoothd[1672]: connect: No route to host (113)
May 15 11:24:08 Sencer bluetoothd[1672]: Can't get HIDP connection info
May 15 11:24:08 Sencer bluetoothd[1672]: connect: No route to host (113)
May 15 11:24:40 Sencer bluetoothd[1672]: Failed to set mode: Failed (0x03)
May 15 11:25:28 Sencer bluetoothd[1672]: Failed to set mode: Failed (0x03)
rfkill list：
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hci0: Bluetooth
Soft blocked: no
Hard blocked: no