蓝牙不工作 ubuntu 18.04

Question

我有一个与此线程中报告的问题类似的问题。，但我正在运行 Bionic Beaver

我的机器是戴尔 XPS 13。Wifi 工作正常。

在设置 -> 蓝牙中，有人告诉我 No bluetooth found, plug in a dongle

我试图将屏幕左上角的按钮从 OFF 转到 ON 但我无法这样做

下面的解决方案，在上面引用的线程中建议，没有做任何事情

rfkill unblock bluetooth
systemctl enable bluetooth.service
systemctl start bluetooth.service

这是其他帖子中请求的各种命令的输出：

lsusb; lsmod | grep bluetooth; dmesg | grep firmware
Bus 004 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. 
Bus 004 Device 002: ID 0424:5537 Standard Microsystems Corp. 
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 007: ID 046d:c00c Logitech, Inc. Optical Wheel Mouse
Bus 003 Device 005: ID 0bda:4014 Realtek Semiconductor Corp. 
Bus 003 Device 006: ID 413c:2010 Dell Computer Corp. Keyboard
Bus 003 Device 004: ID 413c:1003 Dell Computer Corp. Keyboard Hub
Bus 003 Device 003: ID 04a9:1792 Canon, Inc. 
Bus 003 Device 002: ID 0424:2137 Standard Microsystems Corp. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2b Intel Corp. 
Bus 001 Device 002: ID 0bda:58f4 Realtek Semiconductor Corp. 
Bus 001 Device 004: ID 27c6:5385  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
bluetooth             548864  28 btrtl,btintel,bnep,btbcm,btusb
ecdh_generic           24576  2 bluetooth
[    0.032829] Spectre V2 : Enabling Restricted Speculation for firmware calls
[    5.982838] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_01.bin (v1.1)
[    7.243912] iwlwifi 0000:02:00.0: loaded firmware version 34.0.1 op_mode iwlmvm

and

rfkill list all

返回

0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no