Well, I'm not sure if it's normal as it's my first one. It's 6 days old but when I put it to sleep for a while and I wake it up, it shows my desktop as it should be, then it goes black, then blue, then my desktop again but this time with a different resolution (it's huge), black again, blue, black, normal desktop - this happens a few times (about 3/4 times) and only then I can use it.