I tried to make my launcher a different color in Unity-2D (using dconf-editor and directly changing files as per How do I configure Unity 2D?). Now I can't see my background or any programs, and all I see is a black screen, the top menu bar, and the launcher. Programs boot, but I can't see them; the launcher responds correctly, so I know they're there, I simply can't see anything. How can I fix this?
Ok, that's extremely odd. Can you please try lgging from different account (Guest would do it too) to unity-2d and see if the issues exist? If they do, try reinstalling Unity 2D packages.