I have a custom monitor/projector that has passed the Windows Logo Test but I'm still having trouble finding out why my custom resolutions don't appear on the slider bar. They appear under the "advanced" windows when you click on "list all modes" and I can change resolutions that way. I can also change resolutions using PowerStrip. The EDID checked out fine and supports the following resolutions: 800x480, 848x480, 720x480 and 640x480.
I've tested this with Windows Vista and Windows XP. The device works properly under Linux and OSX.
p.s. I also created an INF file using PowerStrip but that doesn't appear to have helped any. Any advice on how to get the resolutions to populate on the slider bar would be appreciated, or any documentation on why these resolutions wouldn't populate would be equally appreciated.