联想电脑装了deepin最新版本后无线网络出现断开，不能扫描周边网络，也不能添加隐藏信号，如何处理？急。。

系统信息：

fxx@fxx-PC:~$ lspci|grep -i net

04:00.0 Network controller: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)

05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)

fxx@fxx-PC:~$ cat /proc/version

Linux version 5.10.50-amd64-desktop (uos@x86-compile-PC) (gcc (Uos 8.3.0.5-1+dde) 8.3.0, GNU ld (GNU Binutils for Uos) 2.31.1) #0304 SMP Mon Jul 19 17:10:50 CST 2021

fxx@fxx-PC:~$ uname -a

Linux fxx-PC 5.10.50-amd64-desktop #0304 SMP Mon Jul 19 17:10:50 CST 2021 x86_64 GNU/Linux

fxx@fxx-PC:~$ cat /etc/issue

Deepin GNU/Linux 20.2.3 \n \l

fxx@fxx-PC:~$ lsb_release -a

No LSB modules are available.

Distributor ID: Deepin

Description:    Deepin 20.2.3

Release:        20.2.3

Codename:       n/a