I know there are current threads that have been solved for this issue, but none of them have seemed to help me.
I'm using Ubuntu 14.04
My wifi icon on the top has disappeared, I can still connect to the internet through Network in System Settings, but I cannot see if I am connected.
I done this:
sudo service network-manager stop
sudo rm /var/lib/NetworkManager/NetworkManager.state
Start network manager back:
sudo service network-manager start
And that hasn't worked. I've tried a few other things but I'm sorry I forget what else there was.