I'm using Ubuntu 14.04 LTS 64bit on a Laptop.
The problem is that screen keeps blinking like rainbow.
This is what happened on my laptop http://www.youtube.com/watch?v=mOY4R...lhPcxGm7IpyLWw
My workaround was editing /etc/default/grub.
But that wasn't a perfect solution, because I can't adjust screen brightness and laptop becomes so slow when I play graphical games after that.
So I want to know if there is a better solution.