Since I've installed this beautiful rom "[Rom] [PMEM] [RC #1.2] [Arc/s] [KitKat] [Official] [AORP - 4.4.2]" I noticed that when I put my device in stand-by (pushing the power button only once), the display of my arc-s doesn,t really turn off. I can see it isn't really black, but there is a light in the background. After several attempts i can finally have a black screen. What could be the problem? May this inconvenience drain my battery?