sudo apt update && apt install firmware-iwlwifi
sudo modprobe -r iwlwifi ; modprobe iwlwifi
WiFi can scan, but not connect using NetworkManager (Debian 9 Stretch)
If you find that your wireless network device can scan, but will not complete connecting, try turning off MAC address randomization.
Write inside /etc/NetworkManager/NetworkManager.conf:
[device] wifi.scan-rand-mac-address=no
https://wiki.debian.org/iwlwifi
https://wiki.debian.org/WiFi/HowToUse
http://depo.pardus.org.tr/pardus/pool/non-free/f/firmware-nonfree/
pardus depolarında aynı isimle var.