I have just installed Lubuntu on a friend's laptop. I have entered the wifi/router settings into network connections but I am unable to search to find wifi networks.
When I installed Lubuntu on my personal laptop I just left clicked the mouse on the wifi symbol (upside down triangle) in the bottom left of the task bar and various wifi networks appeared in the search.
The wifi LED is showing ok.
sudo service network-manager restart
– Gayan Weerakutti Aug 17 '15 at 06:16