Hi Am using Lenovo Thinkpad T430 with Intel Centrino Wireless-N 2200 (2x2 BGN) as built in WLAN card. Ubuntu OS is running on this. Want to use WLAN card as WLAN sniffer. Does this WLAN card support monitor mode ?
Unfortunately following error is coming after step 3 :: Error for wireless request “set frequency” (8B04) : Set failed on device wlan0 ; Device or resource busy asked 14 Nov '13, 07:08  vamsi |
One Answer:
please follow the instructions in my answer to a similar question, especially the airmon-ng part to enable monitor mode:
The device might be in use by another tool. On Ubuntu it could be the "Network Manager". Please disable the Network Manager and then try again.
Regards answered 14 Nov '13, 07:47  Kurt Knochner ♦ |
Hey
Thanks for quick suggestion. I stopped network manager, but even then it comes as follows ::
sudo stop network-manager sudo ifconfig wlan0 down sudo iwconfig wlan0 mode monitor sudo iwconfig wlan0 channel 6
Error for wireless request “set frequency” (8B04) : Set failed on device wlan0 ; Device or resource busy
well, Network Manager was just the most likely tool. There might be others on your system. As we don't know the configuration of your system, you are the only one that to figure out what software is accessing the card. Sorry ...
BTW: You are not connected to a wireless network via wlan0 while you try to run airmon-ng, are you?
I made sure WiFi is not connected. Infact, its disabled.
You ran:
Maybe you should try to run it in the opposite order