I created a simple scene, 3 walls a ground and a ball and cylinder, I lighted them up with 3 lights and I'm using mia_material_x for everything. Also I'm using final gather and global illumination.
Once the scene is set up I use the batch bake option but no matter what I do two of the walls are always black, if I bake all objects at the same time it's usually the back and right wall, but if I bake individually it's random which wall will be black.
The other walls, the ground and the objects render out correctly, but no matter what I change in the options the problem persists, and right now I'm stumped as to what I should do.
Here i attach an image of how the scene is rendered normally and after I the bake, also I attach the scene because why not? I probably have a problem somewhere in my options or something.
In any case thanks for any help someone can give me, this is driving me nuts.
P.S.: I originally posted this in the general lightning and rendering section, I repost it here while I figure out how to delete the older post.