Is there a way to fake a dual (second) monitor

I made Windows think I had two connected displays like this:

  1. Right click on the desktop, click 'Screen Resolution'
  2. Click 'Detect' on the next screen
  3. Click 'Another display not detected' and under the multiple displays option select 'Try to connect anyway on: VGA'
  4. Click 'Apply'
  5. You can now enable your desktop to be extended as if you have a second screen plugged into your computer.

To view the second screen. This can be done via LogMeIn or TeamViewer on iOS, Android, Windows, Mac and I believe Linux:

I used TeamViewer as I already use it, so already have it installed

  1. Opened TeamViewer on iPad
  2. Connect to the computer setup previously
  3. Using a 'Monitor' button at the bottom, select and show screen number 2.
  4. iPad now shows screen 2 from PC.

Another free solution that works:

  • install TightVNC
  • install a virtual display driver like this or the one coming with zonescreen
  • extend the Desktop across both displays
  • start TightVNC Server
  • in TightVNC properties go to Display, Sharing area and select 'Full desktop'
  • start vncviewer and connect to localhost
  • scroll to the left/right to your virtual display and you're done

Okay, I found the solution on this site, in another question.


Since you want Windows to think there are two physical monitors, maybe Matrox PowerDesk or Virtual Display Manager would fit your needs.


I found cheapest way to trick pc by physicaly making an dummy VGA (XGA,RGB) analog connector by simply putting three resistors from 50 up to 150 ohms on some connections. i have school TV setup that needed an external HDMI audio/video output as secondary monitor on windows xp system. The tricky part is that when you disconnect the main VGA monitor the whole desktop is set to the HDMI and whole secondary monitor trick just f***s up, so i made a quick search on the internet and found way to trick GPU to think that it is actual monitor connected as VGA and set that to default desktop and do not transfer desktop to the HDMI. http://www.geeks3d.com/20091230/vga-hack-how-to-make-a-vga-dummy-plug/ the resistors works as and answering mashines and if GPU sends R/G/B signals it is transfered to receiving pins and fooling the GPU that is actualy monitor on that VGA port connected. To view the desktop you can use any remote control program even the native one, and see whole desktop on dummy VGA AAAAND secondary monitor that is REAL :) Hope that will be helpful for someone. P.S. I did cut off old VGA cable connector and strip it apart, used soldering and hot glue to make sure it will not shorten the connector. The shortening of ANY connector on pc can cause malfunctions so be VERY careful and doublecheck EVERYTHING! You have beying warned ;) Good luck and sorry for any spelling mistakes i made. English isn't my language ;)