我昨天在笔记本电脑上下载了 Ubuntu 20.04.1 LTS 作为双启动，但每当我尝试用蓝牙连接任何设备时，蓝牙一直说“正在搜索设备，当我尝试从手机连接到我的 Ubuntu 机器时，它仍然没有出现在可用设备中：
06:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
Kernel driver in use: wl
Kernel modules: bcma, wl
Bus 001 Device 006: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 005: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
Bus 001 Device 004: ID 1bcf:2b8b Sunplus Innovation Technology Inc.
Bus 001 Device 003: ID 1ea7:0064 SHARKOON Technologies GmbH
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub