It keeps turning on the backlight even when locked, even when it's on my desk without anyone touching it. I wouldn't care but it's actually eating up the battery really, really fast because of it, so it's pissing me off.
Worst of all the touch screen and the screen inside are the same LCD panel so I can't disconnect the touchscreen to see if it helps.
I've already set up external backlight on 7 seconds. It does turn off after 7 seconds. Then turns itself back on randomly a few seconds later.