Comment 1 for bug 82715

Thank you for your report please try the following.

open a terminal and type the following.

sudo cp /etc/network/interfaces /etc/network/interfaces.bak

now do the following.

sudo gedit /etc/network/interface

scroll down the list until you find your wireless connection and delete the two lines. Save the file, then reboot your machine.

If that fails you can reset to the default with the following.

sudo rm /etc/network/interfaces

sudo mv /etc/network/interfaces.bak /etc/network/interfaces

If this solves your problem please report back many thanks.