Can’t connect to WiFi in debian 9

Can’t connect to WiFi in debian 9 and Ubuntu 17.04/17.10 [FIXED]

Recently I installed Debian 9 xfce on my home desktop, I was able to connect to the wi-fi network at the time of installation but after logging into desktop I am not able to connect to any wi-fi network using network manager.

After some searching I have found that this issue is due to the new privacy feature (MAC address randomization) in the new version of NetworkManager causing some wi-fi adaptors to stop working.

Both Debian 9 and Ubuntu 17.04/17.10 are badly affected with this bug, You can read more about this bug in Debian 9 here and Ubuntu 17.04/17.10 here .

Follow below steps to fix this issue in Debian 9 and Ubuntu 17.04/17.10

Edit NetworkManager config file

 sudo nano /etc/NetworkManager/NetworkManager.conf

Now add below lines to the file

[device]
wifi.scan-rand-mac-address=no

Restart NetworkManager service

 sudo systemctl restart NetworkManager 

Now you will be able connect to wi-fi network.

Artigo retirado de: https://linuxsuperuser.com/unable-connect-wifi-debian-and-ubuntu/

Nota: Todos os artigos que retiro são testados por mim.