virtualbox.org

Hi everyone,

I am currently trying to host a game - DCS world, a flight sim combat -on virtual box with win7 pro installed on it. But everytime i start the game, it crashes. Here is what the log game says:

ERROR DX11BACKEND: DX11Renderer::init() failed - D3D11CreateDevice() returned DXGI_ERROR_UNSUPPORTED

From what i heard, it is related to the virtual graphic card, and the game need a physical graphic card in order to run properly. So i would need a "gpu passthrough" between the host and the guest.

Does someone knows how to solve this issue?

Ty for your help

PS: My graphic on the host is a NVIDIA GEFORCE gtx 850M

First, that's an error message, not a crash.

If you have the GAs installed then VirtualBox drivers provide Direct3D 8/9 support. There is no Direct3D 11 support as yet. Also there is no "GPU passthrough" (at least not unless you have a Linux host which supports VT-d, and a graphics card dedicated to the purpose - and even then I can only remember two reports of anyone managing to get it working).

High performance gaming just isn't the forte of virtual machines I'm afraid.

mpack wrote:and even then I can only remember two reports of anyone managing to get it working

Two? I'm only familiar with one from Perryg, and that was 1) a pain in the kiester, 2) long time ago, 3) nothing spectacular to write home about. Do you have a link for the 2nd successful attempt? Nothing vital, just for reference...

Then according to your answers virtual box is not going to works with directx11. Its very disappointing considering that virtual box is able to operate with directx9 but not with directx11, a 10 years old technology...

Do you know an alternative to virtual box that can do the job?

PS: My host is running with windows 8.1 and the graphic card is an Nvidia Geforce GTX 850m

Do you know an alternative to virtual box that can do the job?

Yes, run that server bare metal.

I don't understand, can you detail?

You got to run the game either on your host, or dual-boot. But it's got to be on real, not virtual hardware.

im not looking for a dedicated server solution but a virtual server machine. The DCS world server can be run with very minimum graphics to operate then i dont need something powerful, it would be a waste of resources.
To be clear: Im looking for a virtual machine that can passthrough the gpu.

To be clear: you can't do it in a VM.
Not with what you have right now.
See ch. 9.6 PCI passthrough for the theoretical requirements.

Blast wrote:Its very disappointing considering that virtual box is able to operate with directx9 but not with directx11, a 10 years old technology.

I'm sure. However VirtualBox development priorities are, I'm afraid, set by the paying customers. That probably means business customers who are not interested in the latest gaming features, they only need to run CAD.

Speaking as someone who happens to be heavily involved in a business graphics dev project right now I can tell you that my priorities are (a) OpenGL, since I don't want MS pulling the rug from me when they want to force me onto a new platform, and (b) I don't need anything later than OpenGL 3.1, in fact I can run on OpenGL 2.1 - as long as I have vertex buffer objects I can make it sing.

mpack wrote:in fact I can run on OpenGL 2.1 - as long as I have vertex buffer objects I can make it sing

And I always thought that OpenGL was about video/graphics, not... audio!