I have a Raspberry Pi 3B and Raspberry Pi 5, both with kali 2025.2 installed. I need to use them to monitor traffic, so I tried to use airodump-ng to find access points, but I get no results. In the guide https://www.kali.org/blog/raspberry-pi-wi-fi-glow-up/ they are stated as compatible with this type of operation, thanks to the nexmon project. The packages listed in the guide are already installed in my devices.
These are the commands I've been running (as root):
airmon-ng check kill
airmon-ng start wlan0
iwconfig (which lists wlan0mon as Mode:Monitor)
airodump-ng wlan0mon
This last command does not show any result, even if there are a lot of APs with ongoing traffic around me.