Problem

Solids are displayed in black when selecting illustration or smooth
display modes

Solids were completely displayed in black when selecting an Illustration
or Smooth display mode, while wireframe showed objects in their colors.

Solution

This can be caused by using a video card which does not meet the
hardware minimum requirements.
Solution is upgrading the video card.
Possible workarounds are disabling the video card hardware acceleration
(if possible) and/or use only one screen.

See Also