Random question: So, I have a mechanical keyboard that has lighting under the keys. At night, I put my computer to sleep, and the keyboard lights turn off. However, at some point in the middle of the night, the keyboard lights always turn back on. The computer is still asleep, but the keyboard lights just... turn on at some point. When I wake the computer up, the keyboard lights turn off while the computer goes through the wakeup process.

So... why do the lights turn on?