Only 29hz and 30hz can be selected on a TV at Change resolution attribute in Windows Vista

Answer ID 2078
Published 06/29/2007 05:10 PM
Updated 12/14/2007 01:41 PM

Why can I only set 29hz and 30hz on my TV at the Change Resolution attribute in Windows Vista?


This is not an problem but the way Microsoft User Interface presents interlaced video modes. The graphics driver interface returns 60Hz/interlaced to the User Interface but it presents such mode info by halfing the refresh rate if it's an interlaced video mode. So 30Hz is indeed 60Hz/interlaced and 29Hz is 59.94Hz/interlaced.

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