I have the latest RPi2 attached to my HDMI TV running Ubuntu Mate for RPi. When I try to watch youtube I get the video that is all but unwatchable although sound is heard.
I am running chromium, since I can't get chrome installed. Firefox plays videos fine, but I prefer to use chromium. It is likely a flash player issue but can't find the solution for this.
Will try to attach a picture, thanks.