I am currently having an issue with the "airmon-ng start wlan1" command. When I input this command, it does not list any interfaced. The weird thing is that when I input the command "airodump-ng wlan1" it works, it list the BSSID's.

This is the process which I used to get my card up and running:
ifconfig wlan01 down
iwconfig wlan1 mode monitor
ifconfig wlan1 up
airodump-ng wlan1

I did have to kill a few PID that were listed when I input the command " airmon-ng start wlan1"

So my main question is why is my interface not being listed when I input commands "airmon-ng" or airmon-ng start wlan1".

Thank you.