The closest thing to this problem I can find is Fuzzy static noise on screen, but that is not the same problem I am having.
I'm running Ubuntu 15.04 on an Asus G750JW laptop. I have installed the latest NVIDIA drivers from their website (346.59). Graphics acceleration is working perfectly.
Black or dark colors on the screen are 'noisey'. It looks something like this, but darker.
Edit: Forgot to mention this does not happen on Windows.
It's not extremely annoying, but I would like to get it fixed. My graphics card is a Nvidia 765M. Any ideas?