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What is the state of Multiseat in Linux today?
(lemmy.world)
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this post was submitted on 04 Dec 2023
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Not entirely sure why this reply is being panned (was at -6 when I first saw it).
OP is in the process of upgrading their PC to a Ryzen 9. If we make the assumption that this Ryzen 9 is on the AM5 platform, the CPU comes equipped with an IGPU, meaning the RTX 3060s are no longer needed by the bare metal. So, installing a stable, minimal point release OS as a base would minimize resource utilization on the hardware side. This could be something like Debian Bookworm or Proxmox VE with the no-subscription repo enabled. There's no need for the NVIDIA GPUs to be supported by the bare metal OS.
Once the base OS is installed, the VMs can be created, and the GPUs and peripherals can be passed through. This step effectively removes the devices from the host OS -- they don't show up in lsusb or lspci anymore -- and "gives" them to the VMs when they start. You get pretty close to native performance with setups of this nature, to the point that users have set up Windows 10/11 VMs in this way to play Cyberpunk 2077 on RTX 4090s with all the eye candy, including ray reconstruction.
Downsides:
Upsides:
It's not exactly what OP is looking for, but it's definitely a valid approach to solving the problem.
I came to the comment section to recommend Proxmox or another hypervisor as well. If it was a system with just one GPU, I wouldn’t, as splitting it between two VMs can be difficult. But, most of the time having two GPUs under one OS can be a lot worse too though. I think it’s definitely the cleaner & easier way to go. One caveat I’ll add is that resources are more strictly assigned to each seat, so memory & cpu can’t be sent to who needs it more as readily. Another positive though is that it would be super simple to create a third VM with a small amount of resources for running a small self-hosted server of some kind on the same box.