Question about what would show up if I plug a monitor on two instances of Intel HD530 iGPU as a mediated device

[alpha754293]

I have a system with an Intel Core i7-6700K which has the Intel HD530 iGPU.

I have two VMs, set up in Proxmox 8.4.1 where it is now using said HD530 iGPU as a mediated device, so that I can share the single iGPU between two Windows 11 VMs.

My question is, when I plug a monitor to the HDMI port on the motherboard, how will I know which VM will that port be displaying the output from (which VM)?

 

[DerekG]

My question is, when I plug a monitor to the HDMI port on the motherboard, how will I know which VM will that port be displaying the output from (which VM)?

As I understand it, mediated iGPU doesn't provide any video output.

But I could be wrong about that as I've never got the mediated GPU to function correctly.

 

[alpha754293]

As I understand it, mediated iGPU doesn't provide any video output.

I know that for a "normal" GPU passthrough, you will get the video out.

I haven't tried plugging a monitor to the HDMI port on the motherboard of the mediated iGPU yet.

But I could be wrong about that as I've never got the mediated GPU to function correctly.

I can share the HD530 iGPU between two Win11 VMs and remote into them, respectively.

But now, the reason why I am asking is because I want to see if I would be able to now use the mediate HD530 iGPU, in a win11 VM, to drive a 4K TV, with DTS:X audio passthrough.

 

[DerekG]

But now, the reason why I am asking is because I want to see if I would be able to now use the mediate HD530 iGPU, in a win11 VM, to drive a 4K TV, with DTS:X audio passthrough.

The mediated iGPU is virtualized. It can be used for rendering and graphics acceleration, but as far as I am aware it won't be able to communicate with the hardware of the HDMI or display ports.

What are you seeing when a monitor is connected?

I'd be interested to see how you got it working on the HD530, the last time I tried (about 2 years ago) it was really flaky in operation, so I gave up on the idea.

 

[alpha754293]

What are you seeing when a monitor is connected?

I haven't quite tried (to) yet.

I might give that a shot in a moment here, as I was hoping that others might have already tried it and be able to speak to their own experiences with this (but apparently not?).

I'd be interested to see how you got it working on the HD530, the last time I tried (about 2 years ago) it was really flaky in operation, so I gave up on the idea.

I'll have to dig up my deployment notes and copy-and-paste them here.

The idea for trying this came from an apalrd's adventures YouTube video where he was able to enable SR-IOV on I think it was the Minisforum MS-01 (I *think* it was a 13th gen Intel, but it's supposed to work with also the 12th gen Intel as well).

Tried to do that with my Intel Core i7-6700K, but of course, it's wayyyy too old for SR-IOV on the iGPU side of things, so learned about this "mediated" device thing instead, and started working on getting it to work.

I had previously already successfully passed the iGPU over into a single Win11 VM, but now, with it as a mediated device, I can pass it up to a maximum of two VMs, so that's what I've done.

It works. And as far as I can tell, although I haven't done anything _too_ graphically intensive with either instance, I haven't noticed any issues.