When you change the Presentation Display Mode to Duplicate, the system will try to synchronize with the video port connections and will default to a compatible video resolution of a non-DVI/Display Port connection.
Even though you only have one monitor physically connected to the video adapter, there are still other DVI/Display Port connections that are not used but available. This is expected behavior with video adapters that have multiple DVI or Display Port connections. This issue typically occurs on different models and brands of video graphic adapters when connected via DVI or Display Port.
You will notice that the display resolution may change to a lower resolution when you use the Presentation Display Mode keyboard shortcut (Windows logo key + P) to change the mode to Duplicate in a Windows 7 Computer with only one monitor connected. This article helps fix an issue where the display resolution may change to a lower resolution when you use the Presentation Display Mode keyboard shortcut (Windows logo key + P) to change the mode to Duplicate.Īpplies to: Windows 7 Service Pack 1 Original KB number: 2518084 Symptoms
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