bluetoothctl 和扫描没有结果

Question

我删除了我的问题并用 new 提出新问题方法。我无法使用bluetoothctl命令找到任何设备（手机、耳机）。根据使用 bluetoothctl 从 Ubuntu 命令行扫描、配对、连接到蓝牙设备和蓝牙耳机（Arch wiki）。我的笔记本电脑有蓝牙：

[bluetooth]# list
Controller 38:59:F9:42:98:34 debian [default]

顺便说一句，我无法使用 进行扫描blueman。

root@debian:~# /etc/init.d/bluetooth start
Starting bluetooth (via systemctl): bluetooth.service.

[bluetooth]# show
Controller 38:59:F9:42:98:34 (public)
    Name: debian
    Alias: debian
    Class: 0x001c010c
    Powered: yes
    Discoverable: yes
    Pairable: yes
    UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
    UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
    UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
    UUID: Headset AG                (00001112-0000-1000-8000-00805f9b34fb)
    UUID: Headset                   (00001108-0000-1000-8000-00805f9b34fb)
    UUID: Message Notification Se.. (00001133-0000-1000-8000-00805f9b34fb)
    UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
    UUID: Phonebook Access Server   (0000112f-0000-1000-8000-00805f9b34fb)
    UUID: Message Access Server     (00001132-0000-1000-8000-00805f9b34fb)
    UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
    UUID: OBEX File Transfer        (00001106-0000-1000-8000-00805f9b34fb)
    UUID: IrMC Sync                 (00001104-0000-1000-8000-00805f9b34fb)
    UUID: OBEX Object Push          (00001105-0000-1000-8000-00805f9b34fb)
    UUID: Vendor specific           (00005005-0000-1000-8000-0002ee000001)
    Modalias: usb:v1D6Bp0246d0532
    Discovering: yes

[bluetooth]# scan on
Discovery started
[CHG] Controller 38:59:F9:42:98:34 Discovering: yes
[bluetooth]# devices 
Device D0:13:FD:FC:D3:B2 LG Stylus2 Dual
Device F4:7B:5E:40:DC:2A TVBluetooth

LG Stylus 2 之前由 发现gnome-control-center。
我的耳机是三星 Level U。