The issue started when I updated google chrome to the latest version; I'm not positive, but I think I went from version 31 to 38. When I go to youtube and click to play a video, the screen goes black on both my displays (laptop screen and output to LCD TV). I haven't been patient enough to see if it comes back, I've just powered down at that point. I was able to play youtube videos perfect in Chrome V31. I know this question has been asked a few times recently, but many of the posts were left unanswered. Also, youtube plays great in firefox.
To upgrade chrome I used the following:
sudo apt-get --only-upgrade install google-chrome-stable
Followed by:
sudo pkill -15 google-chrome
sudo pkill -15 chrome
Then relaunched Chrome.
Best Answer
For me the same issue, this question is asked many times, I found many solutions, none worked for me, until I swithed off the hardware accelleration in Crome. See http://www.solveyourtech.com/turn-hardware-acceleration-google-chrome/