Raspberry Pi 4 + TP Link WN722N + Kismet Wireless Issue

December 27, 2023, 11:27

maxwalks

Hi All, Hoping someone might be able to shed some light on the issue I'm currently experiencing. Here are the system details: Device: Raspberry Pi 4 Model B 4GB OS: Debian Bullseye 64-bit Raspberry Pi OS Kernel version: 5.15.84-v8+ Wifi Adaptor: TP Link WN722N Version 2. Driver: https://github.com/aircrack-ng/rtl8188eus compiled from source. Kismet Wireless compiled from source at https://github.com/kismetwireless/kismet (I've also tried the Bullseye and Buster packages as well with the same result) I'm successfully putting the wifi adaptor into monitor mode, however when I launch Kismet I get this error: ERROR: Data source 'wlan1' failed to launch: Command did not complete Then, my networking services appear to stop working. I'm not sure what the issue is here because no networking related commands work, or return an error message. All commands such as 'ifconfig' 'iwconfig' 'sudo systemctl restart networking' all just hang the console, no error, the console just stops responding. Even the reboot command won't work. Some further notes: - The kismet web server is still running and accessible from a remote machine. - The hci adaptor (bluetooth) keeps working fine. - Running kismet with no wifi adapter results in no issues with networking commands - Running kismet with another wifi card, the Alfa Networks AWUS036ACM with the Aircrack driver works fine: no issues. If you're able to help with fixing the entire issue, great! But if someone is even able to tell me exactly what's breaking then that would help me dig into this further. The next thing I need to test is whether another program is able to use the adaptor in monitor mode successfully, I had a poke around and found a few options but was unable to install them easily due to incompatibility with Raspi OS / missing dependencies etc, can anyone suggest another application that will use the monitor function on the adaptor that I can use to test whether this is a Kismet or drivers issue? Cheers!