I've just installed DEEPIN V20.9 in my Lenovo G490, whose wireless adapter is BCM4313 Rev1.

It used to be driven well under Deepin V15, but to my suprise, the adapter cann't be driven by V20.9

I've tried to bash like:

sudo apt install bcmwl-kernel-source

It indeed temply worked, but failed again after reboot.

One of my friends told me that, it was due to linux kernel 5.15.******, if installed under kernel 5.18, problem would be solved.

thus, i bashed like:

sudo apt remove linux-image-5.15 && sudo apt install linux-image-5.18

but it was still not cracked.

found from BAIDU.com, bashed like:

sudo apt install firmware-brcm80211

which failed and warned that, the firmware was involved in linux-firmware package.

i was newbie, i followed the bash

sudo apt remove linux-firmware && sudo apt install firmware-misc-nonfree && sudo apt install firmware-brcm80211

and my wifi totally crashed, even used RT3070L or AR9271 USB adapter.

I've already restored my linux-firmware, and USB adapter can work.

But newbie is newbie, how to drive my BCM4313?