Debian9 无线网卡驱动安装

https://wiki.debian.org/iwlwifi

sudo vi /etc/apt/sources.list
---------
.....
deb http://httpredir.debian.org/debian/ stretch main contrib non-free
---------

sudo apt update
sudo apt install firmware-iwlwifi

su -
modprobe -r iwlwifi
modprobe iwlwifi