After 780Ti instalation it does NOT enter sleep anymore

[edit004]

Hello guys,

First time poster here after a lot of lurking.

I've managed to overcome a lot of problems and install an Hackintosh Sierra 10.12.2 on an I7 4770k + Asus Z87 Deluxe + 32Gb Ram.

Everything was working fine (except the Wi-Fi and the BT but I did not bother with those.. for now)

After 3 weeks of testing, everything was rock stable so I decided to take the next step and install an Nvidia 780Ti. I managed to make it work BUT the Hackintosh does NOT enter sleep anymore. I installed the latest web driver for Nvidia but no luck.

I am not good with linux or Macs so this is a problem that I can't solve on my own so Please help !

All suggestions are welcome !

Thank you !

 

[edit004]

So no one has any clue? Maybe cam someone help me identify the problem... tell me where to look for errors... or maybe logs to identify the possible problem.
With my lack of linux skills I can't solve it on my own so please help me !