Terrain is entirely black in editor

I noticed this bug in Unity 5 too. I tested and i discovered whats the problem.

1.Click on Window (from file menu) and then click on Lighting.

2.Now select Ambient Source (From Lighting) to Color or Gradient BUT NOT TO SKYBOX!

3.Change Reflection Source(From Lighting too) to custom BUT NOT TO SKYBOX!

4.Do this for every scene you have.

Hope I helped : D

@LukeZaz Same problem - and none of these solutions worked for me. What did work for me, however, was disabling and re-enabling the terrain in the editor; after a few seconds, the lights popped back on.

I was having the same problem not too long ago so maybe I can help. For me it was the texture/materials default emission colour. I would start the game but when coming out of the game and back into the scene editor all of my levels objects would turn black.

Select the terrain (assuming you have a material assigned like grass or dirt) and open up the shader to look for one of the settings using the "black" colour by default. You would need to change this to match the colour of your terrain.

I just had the same problem!! I got my terrain to show up by reloading my grass texture. Like this:

1. Find the grass in your project.

2. Select it, then change the resolution Max Size.

3. Click the Apply button.

After doing that my terrain showed up, but it was extremely bright from all the lights I made in the scene trying to light up my black terrain. :O

I know this isn't the best solution, but it works for me for now.