this is just a small issue, but it bugs me sometimes i know there's that option for whether or not you want the screen to automatically dim before it goes to sleep, but it seems like no matter how long i set it to go to sleep (right now it's at 4 minutes) it still dims after about 30-60s. is there a way to change how long it waits before it dims? i do a lot of reading on my computer and it's annoying to have to keep hitting the mousepad to make the screen bright again. i realize i could just tell it NOT to dim before it goes to sleep, but i'd rather it was set to dim about 30s BEFORE it goes to sleep. is this possible?