Ok it's this issue http://www.wiredrevolution.com/ubuntu/fix-blue-tinted-video-in-ubuntu
However, note that the "recommended" version of the NVidia drivers (which is supposed to fix the issue) is not recommendable at all, it is completely screwed up, so it is not an option.
Ok it's this issue http:// www.wiredrevolu tion.com/ ubuntu/ fix-blue- tinted- video-in- ubuntu
However, note that the "recommended" version of the NVidia drivers (which is supposed to fix the issue) is not recommendable at all, it is completely screwed up, so it is not an option.