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Why does second monitor in dual monitor setup only clone the first?

365 100+
I added second monitor for extended mode for first one, but always I get samething on both like cloning. when I select "Extend my Windows desktop onto this monitor" under display properties, once I click on "aply'ok", the checkbox gets unselected. It never worked in extended mode, one is MAG monitor (old one), I added one old DELL monitor using split cable. any idea?
Nov 5 '10 #1
1 3468
Stewart Ross
2,545 Expert Mod 2GB
You can only extend your desktop to two monitors if you are using a graphics card with at least two outputs, connecting one monitor to each output independently.

Splitting a single output using a cable splitter cannot give you two monitor outputs - just the same one repeated, as you have found.

-Stewart
Nov 6 '10 #2

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