Works fine after 5-15 minuts

[Tosh2033]

Hi, this module works fine for me, but i have one strange issue:

My MM is connectet to an electric socket that turns at night off to save energy-costs. So if i turn the switch at the morning on my setup boots und my MM starts. after the 'powerSavingDelay' of 60 seconds the screens turns off....ok sounds great for you?! Look: It will always turns off after the 60 seconds, still if i stand in front of it, it doesnt matter!
So the screen turns in any case off and still stays off, no matter if iam in front or not, the sensor doesnt works.

After 5-15 Minuts the sensor reacts and the screen turns on. After this first delay there is no issue, its always the first turn off/on phase after booting the system. Then it totaly works fine over the day. Whats wrong?