I wiped Windows 8 upon buying my new lenovo G50-30 laptop. The wireless is turned off by hardware switch. I have used
sudo rmmod ideapad_laptop
Which works, but I must re-enter the code everytime I turn on the computer. I also tried thi code I found in the forums to fix the problem more permanently
echo "blacklist ideapad_laptop" | sudo tee -a /etc/modprobe.d/blacklist-ideapad.conf
but is not working for me...nothing happens.
Code used was found at this link in the Ubuntu Help Forums