SP 3 Not Sleeping Properly

[DXL007]

So I have my power button set to put my SP 3 to sleep when pressed.
I finished work for the day, pressed the power button, and the screen went dark as it always does after pressing the power button.
I placed my SP 3 in my laptop back and prepared for my trip back to the hotel (I am a consultant and travel M-F for work)
Got back to the hotel and went to take out my SP 3 to do a little more work.
The fan was on, the device was very warm (Not hot thankfully), but the screen was off.

What would cause this? I thought when it was asleep that there were no processes running and the only thing that had power was the memory?

 

[GreyFox7]

Might want to check this ...

http://answers.microsoft.com/en-us/...-standby/f2cd1aa6-fc78-4ecb-9039-d811137de234

1. Open Device Manager from the Control Panel or however you normally open it
2. Expand Network Adapters and double click Marvell Avastar 350N
3. Choose the Power Management tab and make sure the checkbox is checked for Allow the computer to turn off this device to save power

 

[pcom]

Check this post, too: http://www.surfaceforums.net/threads/surface-pro-3-tips-tricks.9325/page-2#post-73938 -- what it says is to do the same thing with the keyboard.