When I connect my Surface RT to an external monitor (1080p), the color gradient on the tiles is messed up. I can see appr. 5 vertical bars in slighty different shades of the color. Why? Is it a problem with the output to the monitor? I guess it only appears at the start screen but I'm not quite sure. How can I test it? How can i solve this problem? Does anyone have the same problem? I connect the monitor via a hdmi cable and an hdmi-->micro-hdmi adapter. Thank you!