Some KVM switches (keyboard-video-mouse) and video extenders handle DDC traffic incorrectly, making it necessary to disable monitor plug and play features in the operating system, and maybe even physically remove pin 12 from the analog VGA cables that connects such device to multiple PCs.
Microsoft Windows features a standard "Plug and Play Monitor" driver which uses the display's EDID information to construct a list of supported monitor modes. The Display Resolution control panel applet allows the user to disable this driver's Plug and Play features and manually select any resolution or refresh rate supported by the video card.[2] Many video card manufacturers and third parties provide control applications which allow the user to select a custom display mode that does not conform to the EDID information or the monitor .INF file.
Microsoft Windows features a standard "Plug and Play Monitor" driver which uses the display's EDID information to construct a list of supported monitor modes. The Display Resolution control panel applet allows the user to disable this driver's Plug and Play features and manually select any resolution or refresh rate supported by the video card.[2] Many video card manufacturers and third parties provide control applications which allow the user to select a custom display mode that does not conform to the EDID information or the monitor .INF file.
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