See http://en.wikipedia.org/wiki/Display_Data_Channel and especially the links at the end of http://en.wikipedia.org/wiki/Extended_display_identification_data.

Without DDC, you can not identify the monitor. This happens for ancient monitors, and for monitor cables that do not connect the required pins. On my desktops at home and at work, the CRT monitors are connected via five BNC jacks, just RGB and H-Sync/V-Sync, no DDC pins. No software running on the PCs can identify the monitors.

How much information you get from the monitor depends on the DDC version implemented by the monitor.

And as a last detail, the graphics card has to be able to talk DDC with the monitor. Ancient VGAs can't do that.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^3: How do I find my monitor type and model? by afoken
in thread How do I find my monitor type and model? by markseger

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