According to https://wiki.debian.org/WiFi/HowToUse, "Use the WPA passphrase to calculate the correct WPA PSK hash for your SSID by altering the following example" the command to type is su -l -c "wpa_passphrase myssid my_very_secret_passphrase > /etc/wpa_supplicant/wpa_supplicant.conf" The output of the terminal is: Authentication failed Any solution(s) please? Best regards. Stella