I have since discovered a display problem with my AMD  Radeon video card that if powering off the monitor and then on, it causes the EDID to be lost and there is no display from CS64U. Even with the latest Radeon software, it is unable to force EDID override. However, it still can display when removing the VGA connector or unplugging the monitor power.

It might be a compatibility issue with
an older CS64U chipset that does not read the EDID correctly.  Please use CRU software to force the EDID
since Radeon has remove this feature, CRU also works with NVIDIA video cards.  

Note: Custom Resolution Utility (CRU)
allows custom resolutions to be defined for both AMD/ATI and NVIDIA GPUs by directly
forcing an EDID over ride