I have no shadows under any settings

I tried out all simple solutions, but I don't have shadows never, when I have baked light source everything is dark and there is no light, if I have light source on mixed/realtime everithing is light (even object under other object) I have realtime global ilumination and baked global illumination enabled in lighting options.
All my objects are set to cast shadows and recieve them, but nothing seems to help me. It just doesn't work no matter what I change.
I tried out different sources on light too, different objects, nothing works.