There is another option for that:
"Tilt to wake screen"
Make sure it's on :)
Oblivian:n4:Oblivian: So far have turned off the wifi option. As handy as it may be perceived, can't get it working well with my hidden SSID, and was using battery a bit faster.
Now, has anyone lose shake to wakeup with 5.1.1 like I appear to have? Gestures are fine.. except the rotate to wake as if you are looking at the time :/
Turned off ambient mode maybe?
Have that off to ensure the watchface turns off when not in use. But previously it use to wake up when you rotated your arm as if lifting to look at it. Not anymore. Now needs the button or doubletap