I try to scan wireless networks.
If network-manager service is up and wifi interface connected, iwlist give only one cell - the same it connected with, but if I try disconnect wifi interface by shutting down network-manager interface, iwlist give no result at all.
Also if I try to start up networking service.
user@comp-nam:~$ sudo iwlist wlan0 scan | head -n 2 wlan0 Scan completed : Cell 01 - Address: 2E:2F:97:D7:22:24 user@comp-name:~$ sudo service network-manager stop network-manager stop/waiting user@comp-name:~$ sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning : Network is down user@comp-name:~$ sudo service networking start networking stop/waiting user@comp-name:~$ sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning : Network is down I use Ubuntu 12.04.1
1 Answer
Turn on the interface, not the network manager.
sudo service network-manager stop sudo ifconfig wlan0 up sudo iwlist wlan0 scan 
