No network in Network Manager, Cant connect to wifi. But airodump-ng working

[ptpi]

I don't think Kali has linux-headers-generic. I can"t see it anyway. You will need to work out which kernel you are running

uname -r

and then install the headers for that kernel.

 sudo apt-get install linux-headers-4.12.0-kali1-686 [FOR EXAMPLE]

Hopefully this will work.
I could be wrong here. Can you check whether you have kernel headers installed? Do let me know if I'm on the wrong track.