所以，最近我开始使用 Linux 并且我的蓝牙设备出现问题，它找不到任何要连接的设备 - 其他人也看不到它。
我已经尝试了很多论坛答案，但没有找到任何可行的答案。Bluez 也无法正常工作。当我使用 Windows 8.1 时，我的蓝牙可以正常工作。
输出lsb_release -a：
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
输出sudo lshw：
*-network
description: Wireless interface
product: RTL8723BE PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 00
serial: 4c:bb:58:a1:54:73
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723be driverversion=5.4.0-42-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:42 ioport:2000(size=256) memory:f0c00000-f0c03fff
*-usb:1
description: Bluetooth wireless interface
product: Bluetooth Radio
vendor: Realtek
physical id: 2
bus info: usb@2:1.2
version: 2.00
serial: 00e04c000001
capabilities: bluetooth usb-2.10
configuration: driver=btusb maxpower=500mA speed=12Mbit/s
输出lspci |grep Network：
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
输出service bluetooth status：
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2020-07-27 20:54:53 CEST; 1h 10min ago
Docs: man:bluetoothd(8)
Main PID: 4634 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 8229)
Memory: 1.1M
CGroup: /system.slice/bluetooth.service
└─4634 /usr/lib/bluetooth/bluetoothd
jul 27 20:54:53 zezima bluetoothd[4634]: Bluetooth daemon 5.53
jul 27 20:54:53 zezima bluetoothd[4634]: Starting SDP server
jul 27 20:54:53 zezima systemd[1]: Started Bluetooth service.
jul 27 20:54:53 zezima bluetoothd[4634]: Bluetooth management interface 1.14 initialized
jul 27 20:54:53 zezima bluetoothd[4634]: Endpoint registered: sender=:1.73 path=/MediaEndpoint/A2DPSink/sbc
jul 27 20:54:53 zezima bluetoothd[4634]: Endpoint registered: sender=:1.73 path=/MediaEndpoint/A2DPSource/sbc
jul 27 20:58:46 zezima bluetoothd[4634]: Endpoint unregistered: sender=:1.73 path=/MediaEndpoint/A2DPSink/sbc
jul 27 20:58:46 zezima bluetoothd[4634]: Endpoint unregistered: sender=:1.73 path=/MediaEndpoint/A2DPSource/sbc
jul 27 20:58:53 zezima bluetoothd[4634]: Endpoint registered: sender=:1.73 path=/MediaEndpoint/A2DPSink/sbc
jul 27 20:58:53 zezima bluetoothd[4634]: Endpoint registered: sender=:1.73 path=/MediaEndpoint/A2DPSource/sbc
输出dmesg | grep -i blue：
[ 2.228723] usb 2-1.2: Product: Bluetooth Radio
[ 14.338918] toshiba_bluetooth: Toshiba ACPI Bluetooth device driver
[ 16.033838] Bluetooth: Core ver 2.22
[ 16.033873] Bluetooth: HCI device and connection manager initialized
[ 16.033880] Bluetooth: HCI socket layer initialized
[ 16.033884] Bluetooth: L2CAP socket layer initialized
[ 16.033890] Bluetooth: SCO socket layer initialized
[ 35.299787] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 35.299791] Bluetooth: BNEP filters: protocol multicast
[ 35.299800] Bluetooth: BNEP socket layer initialized
[ 85.024151] Bluetooth: RFCOMM TTY layer initialized
[ 85.024162] Bluetooth: RFCOMM socket layer initialized
[ 85.024172] Bluetooth: RFCOMM ver 1.11
[ 1610.601974] usb 2-1.2: Product: Bluetooth Radio
输出rfkill list all：
0: Toshiba 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
感谢您的时间和回答！