Screen timeout disables itself?

[bigoldthor]

So I have my screen timeout set to three minutes. It seems to work for a while, then various system events will occur or I will put it on the charger and the screen will no longer timeout. When I go into Settings-Display-Screen timeout, the radio button has gone from 3 minutes to ()...not '0' but two parentheses. (There is no '0'.)

What would cause it to simply change itself, i.e. disable itself? I want it to timeout even when on a charger.

 

[bigoldthor]

Well never mind. I feel like an idiot. I forgot I had an app installed called "Stay Awake" that I had set to keep the screen on while charging. I disabled it.

I used to like to have the screen on all the time while charging, but I've noticed some slight burn in.

 

[CellPhone Old Timer]

if you don't mind my asking, why do you need the screen on so long? The has been a few complaint of ghosting due to images burning in and I would think leaving the screen on that long would be more apt to produce ghosting. Not to mention what this does to battery life.