I've tried all the fixes and ran out of Google.
At first I had to type "sudo modprobe -r ideapad-laptop" into the Terminal at startup for the wifi to work. Now it works after I did a more permanent Terminal fix I found here. But it stops working after around ten minutes.
Help! Isn't there a driver I can install or anything? This is the first time I've ever had problems with Ubuntu and I don't wanna install Win 8 again.