Setting up dual monitor dispaly for UltraVNC

betaupsilon · 04 May 2015

I have installed UltraVNC on a WIN7 HOME PREM so that it can act as a host. I have successfully connected to it via WIN PROF machine. I have 2 monitors on both machines. However, UltraVNC VIEWER on the WIN7 PROF machine only displays on 1 monitor. When I look at the CONNECTION OPTIONS within UltraVNC VIEWER I do not see the ability to display with 2 monitors.

On the WIN7 HOME PREM machine I can view the UltraVNC SERVER settings & under the SCREEN CAPTURE tab I have checked the box for SHOW SECONDARY DISPLAY. I have also checked USE MIRROR DRIVER & USE SYSTEM HOOKDLL.

What else am I missing?

Appreciate any input from an experienced UltraVNC user. The documentation on their website is pretty dismal.

betaupsilon · 05 May 2015

This is quite confusing, but it appears I have the dual monitor mode working in the HOST (WIN7 HOME PREM machine). However, on the client (WIN7 PRO machine) only 1 of the monitors displays the HOST machine. To view both monitors I essentially have to move the mouse cursor to the edge of the monitor for the view to scroll between the 2 monitors. So my 2nd monitor on the client is not being used to display anything from the HOST.

So I must be close, but cannot find the proper tool setting to get this to work.

betaupsilon · 05 May 2015

I think I got it working, but it was through trial & error & I am not sure how I did it. There are 2 icons in the tool bar: Toggle Full Screen & Select Full Desktop. Depending on the sequence in which I click them I got it to work + I had to redo the WINDOWS DISPLAY utility to make sure the 2nd monitor on the HOST computer is active.

Is there any clear cut procedure outlined on how this setup needs to be done? Frankly, without iteration I would have difficulty getting this correct if I stepped away from it for maybe a month. As stated before the documentation on the UltraVNC website is dismal.

betaupsilon · 05 May 2015

Another crucial setting on the client side to be able to display dual monitors is to choose from the drop down options a resolution of sufficient size so that both monitors can be viewed simultaneously in UltraVNC VIEWER. That choice is highlighted below:

If I get the time I will try to document my setup because it is a bit tricky & I cannot find a cohesive document that says how to setup dual monitor mode for UltraVNC.

betaupsilon · 12 May 2015

betaupsilon said:

If I get the time I will try to document my setup because it is a bit tricky & I cannot find a cohesive document that says how to setup dual monitor mode for UltraVNC.

As promised, I will document my procedure to get UltraVNC to display dual monitor mode when accessing the HOST computer remotely. I know this site does not necessarily cater to any specific 3rd party software; nonetheless, I decided to post my procedure here instead of UltraVNC website because their site seems disjointed & difficult to weed out any useful information.

My HOST computer is a WIN7 HOME PREM desktop. The client is arbitrary. The version of UltraVNC I have is 1.2.0.5. I also had to install UltranVNC addons version 1.1.9 onto the HOST. Once both are installed open from the START menu UltraVNC Settings. From the Screen Capture tab check the following:

On the CLIENT after UltraVNC is installed open UltraViewer & set the screen resolution as depicted in post #4 so that the screen size allows for displaying 2 screens instead of 1. Once connected to the host the screen resolution & dual monitor display also needs to be set from the Controls Panel (of the HOST) as illustrated: