virtualbox.org

In Linux virtual machine, I have three monitors working in Virtual Box using xrandr. This creates a single "screen0" which is spread across all three monitors.

My problem is I have a legacy application that uses independent screens (AKA: display:0.0, display:0.1, and display:0.2) to locate and display windows on independent screens (such as screen0, screen1, screen2).

Is it possible to create independent screens in this manner using VirtualBox? I have tried several methods in xorg.conf, but if I try to create independent screens with the virtualbox driver it tends to crash.

I have also thought about if it might be possible to "fool" the legacy software and somehow cause a display:0.1 to exist at display:0.0 with an offset of 1920 (to put it on the second monitor.)

Hopefully that makes sense. Has anyone created display:0.1 inside a VirtualBox instance?

VirtualBox simulates the hardware of a PC. At a hardware level your multiple display adapters are inherently independant of each other. It is an operating system which decides whether to treat 3 display devices as separate or as a single display tiled in some fashion.

How can I configure Linux to treat 3 display devices as separate instead of single using the VirtualBox hardware emulation? That is the crux of the question.

It has nothing to do with the VirtualBox hardware emulation. You have a question about how to use Linux, and the answer will be the same whether or not the hardware is virtual.

As to that answer: I have no idea, as I don't use Linux.