I have cm11 and if i power on the tablet and let it a couple of minutes it is freezed at the lock screen. I cant unlock it by swiping the screen and i cant press on the clock widget. If i press the power button it turns on or off the lock screen but i can still do nothing. Only way to restore it is to keep pressed the power button to hard reset the tab. It boots normally then if i unlock the screen and dont let it auto lock. Is anybody else experiencing this issue? It gets really annoying. Could it be the nova launcher because i cant remember this happening before installing it.