You should be able to wake up by pressing 9 (nine) on your keyboard.
You can use the 9 on the numpad too, but only if numlock is...on? Off? I can't tell because my stupid keyboard doesn't have a numlock LED.
If that doesn't work then please let me know, because it's possible you've found a bug!
(Oh, and thanks for playing! I'm glad you like it so far.)