Comment 39 for bug 1488719

I'm still getting this on 4.2.0-17-generic with a Lenovo W550s. Moreover, [if you read the patch](http://www.spinics.net/lists/intel-gfx/msg78796.html) you'll see it just affects whether it prints the warning, and doesn't correct the underlying problem. Related or not, I'm also seeing the blank-screen symptoms [reported here](https://github.com/NixOS/nixpkgs/issues/9755).