I have fullpageos running on a Pi 3. It's working on a HDMI monitor and a TV fine. But having just plugged it into a 10.1 inch touch screen that has max resolution of 1280 x 800, the Pi Boots up but then when it gets to the OS I get a black screen with a mouse cursor. I can move the mouse cursor around but the Browser doesn't launch.

At first it was only showing splash screen of the Pi and then video signal was getting lost. I then had to change config.txt to enable hdmi_safe, after I enabled hdmi_safe then the Pi boots up fine but the FullPageOS doesn't launch.