Then select Extend from the right flyout menu that should appear (this is what will open up the second monitor as an option for you to extend your desktop in the next few steps!).
GOOGLE CAST EXTENSION MAC WINDOWS
Make sure to hold down the Windows button on your keyboard and press P. Repeat steps 3 -5 a third time and voila! Step 6 is now possible.Īssuming your computer is convinced that it has a second screen attached, then to extend your desktop with Google Chromecast, Repeat steps 3 – 5 again, just to stop the Chromecast.į. Stage as your screen will appear on the Chromecast, just not extendedĮ. Note that step 6 won’t be possible at this Screen by switching its input source to that second HDMI port.ĭ. Confirm that you have a visible extended desktop on your second If using a real HDMI cable, you must plug theĬ. Plug in either a real HDMI cable or a dummy plug into theĬomputer's HDMI port. To convince Google Chrome that there is a second screen,Ī. Sample HDMI Monitor Emulator from Walmart. A machine that I've found does not need an HDMI dummy plug is the HP EliteBook 8470p. Has to do with these ports behaving as analog ports. NOTE: it seems a few PCs actually behave as though a monitor is connected, and won't need a dummy HDMI plug. 
Here’s where a dummy HDMI plug, “headless ghost”, or otherĭisplay emulator comes in handy if you do not have an actual second Screen in step 6, then you must convince Google Chrome that there is a second CAVEAT: If simply trying the steps below won’t pull up the second
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