Studio tabs can be enabled/disabled, the surface tab seems to be disabled in your case, probably something that is set up for new instalaltions. Go to the View/Tabs menu, select Surface, when the popup window shows, grab it by the header and drop it in the left or right panel, depending on your preference.

Regarding Lux, it's a physically-based renderer, which means that light is always calculated based on mathematical models of real light. Things like indirect lighting are always active because that's how it works with real light, which makes lighting a scene with Reality much simpler than with biased renderers because you need fewer lights and the ones used work in a very predictable way. Lux at this time has displacement maps based on subdivision but no normal maps. I'm sponsoring the addition of that code by offering some money for incentive to the developers of Lux, I'm waiting for a reply from there. Some code has been alreadu developed, we now need somebody to finish the job, hence the monetary "incentive" :)

Cheers.

Paolo

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