Incus Windows VM Multiple Displays

Incus
1

Any help will be greatly appreciated, I’m fairly new to Incus. I’m trying to get multiple displays working on a Win11 VM. I have multiple Windows VMs working well and now I would like to be able to configure some with multiple displays.

I assume it requires 2 devices to be configured much the same as it would be for a setup with libvirt, rather than say setting max_outputs = x or heads = x as you would for a Linux VM.

I have tried many combinations through both raw.qemu and raw.qemu.conf but without any success.

I either just have 1 display or various pci errors.

I’m running Incus 6.10.1 using zfs.

If anyone already has a working config perhaps you could let me know.

Thanks.

2

Hi!

When you run a Windows VM, you get access to the graphical desktop through a suitable user-space program. Incus requires a SPICE client and there are two such supported client programs.

If you have more than one GPU on your system, you may assign those extra GPUs to Incus VMs. This requires some other hardware support from your motherboard to make it work. Look for GPU Passthrough.

3

Hi

thanks for the reply, I can access the graphical desktop using either remote-viewer/virt-viewer or spicy and both work well , but there is only 1 active display.

I don’t need or want gpu passthrough.

If I were running a similar VMs using Virt-Manager for instance , I would just configure 2 qxl video devices and then the windows VM would recognise 2 displays and using remote-viewer/virt-viewer both displays can be accessed simultaneously .

I was hoping I could do something similar with Incus.