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Proxmox HDMI output for one VM-container
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this post was submitted on 31 Jul 2023
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What you are looking for is gpu pass through. You can do it with integrated graphics as well as dedicated. There is a lot of good documentation out there for proxmox to do this.
I would totally start with a hypervisor. The ability to spin up a new VM for an experiment or project far outweighs any downside. I use proxmox, but that’s mainly because it was the thing to do when I was starting out. There are a few options out there, including installing Debian and running kvm/qemu, which is basically what proxmox is. They all have the same functionality, just different UI/features. Lxc containers in proxmox help a lot as well, when you have a small service you want to run but don’t want to take up a VMs worth or resources. These also helped a lot.
Good luck
Just gonna add a bit here. I haven't used proxmox, but I do have a GPU I assign to QEMU/KVM virtual machines. The arch wiki has an article that helps a lot, for anyone who wishes to try this. I have also found that the virgl drivers allow for sufficient graphical performance for video decoding at high resolution, so that is another potential option to explore here that doesn't involve allocating the GPU to a VM.
I ran an Ubuntu server with qemu and virtmanager as my first set up, because I wanted to learn how it worked at the core rather than just learning the cut and paste of most proxmox tutorials. Ran it for about a year before I switched over to proxmox, brought all my VMs as well.