I bought a pre-installed Ubuntu laptop with 12.04. It used to detect the wireless connections. But due to some problems in my WiFi, I inserted the net cable directly into the laptop. Since then, There is no option for wireless connections.
when I used
rfkill list all it showed me that bluetooth and wireless is hardblocked.
When I pressed the keyboard button for WiFi, the hardblock turns off for both bluetooth and wireless.
In short, the Wifi key turns Bluetooth and Wifi on and off. But still it doesn't show any wireless connection. Nothing...
Please help. Tried all the methods on ubuntu forums like
rfkill unblock all ,
sudo wireless service start , But it doesn't work.