I just cant get any volumetric-fog/light-scattering working

Hi,

I tried different lights (also tired to change them to static)

image

I enabled Volumetric Fog

image

the spotlight (and the other lights) are set at max scattering intensity

I just cannot get any volumetric scattering

I spent the whole afternoon on this

what am I missing ?

thanks for your help

suddenly it started to work while light intensities units are lux instead of cd

wth ???