This is a nouveau issue. Unload nouveau and hibernation start working
normally again.

Ctrl+Alt+F1
sudo service lightdm stop
sudo modprobe -r nouveau
sudo service lightdm start

Btw, how is it possible that system works completely normal after unloading 
nouveau ? 
Is it safe to do apt-get remove xserver-xorg-video-nouveau ?

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https://bugs.launchpad.net/bugs/1641919

Title:
  hibernation has stopped working in 16.10 Yakkety Yak

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