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Mouse pointer goes off the screens in dual monitor setup


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#1 w411

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Posted 13 February 2014 - 06:31 PM

I have a laptop display (1366 x 768) and an additional monitor connected via VGA (1024 x 1280 - portrait mode):

 

http://d.pr/i/guID

 

On the secondary monitor, if I use Droplr and start at the bottom right and go a few mouse scrolls above the upper boundary of the screen to the top left, here is what I get from the screenshot:

 

http://d.pr/i/aGqp

 

If I open an application and hold the Windows key down and use the right arrow, it will scroll through the 3 positions for each window, including 3 positions for the imaginary monitor.

 

Anyone have any ideas on how to get rid of what appears to be an imaginary 3rd monitor that windows is allowing me to interact with but doesn't allow me to see any properties for?

 

 



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#2 Greg62702

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Posted 13 February 2014 - 07:42 PM

You are going to have to go into the adapter software, to figure out how to get rid of the third adapter.  Without knowing the GPU chip type (ie amd or nvida) and model of the chip, everyone will be clueless.  You have the computer, open up Control Panel, then click on Display.  There should be a folder in All programs for the software utility for your GPU chip, that will let you adjust advanced properties for the display adapter.



#3 w411

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Posted 13 February 2014 - 08:08 PM

Display adapter is Intel HD Graphics 3000, Vostro 2420, Windows 7 HP, 8 GB.

 

The Intel utility shows the same as the Windows display options, 2 configured displays:

 

http://d.pr/i/1VeT

 

So yes, the utility does let me adjust all configured displays, but the "third display" is not listed as a configured display.



#4 w411

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Posted 13 February 2014 - 09:06 PM

You did actually give me an idea to look in the device manager under display adapters and I found the issue:

 

http://d.pr/i/RYam

 

I have used the Air Display app by Avatron that lets you use an iPad as a vitual display:

 

http://www.avatron.com/apps/air-display/

 

I had the most up to date version, but it was upgraded as each release came out so something may have been misconfigured along the way.  I removed the installed version which immediately fixed the phantom display.

 

Rebooted the system, installed the current version and so far no phantom screen.






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