Hello there. I have the same problem too. In fact, it's so predictable it's almost comical. I can stand in the sunlight but have my shadow casting over the LCD and still be ok. Soon as I rotate and there is direct sunlight on the screen, half or all of the screen goes black. I can refresh the monitor two ways: Fn+F7 twice or rotate the screen horizontally with ALT+CTRL+right arrow, then return it to the right orientation with ALT+CTRL+up arrow. As long as there is direct sunlight on the screen it always goes back to black .
Have you found a problem to this solution?
Thanks.
