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shapis via Linux

6 months ago

shapis
6 months ago

Is there an easy way of having a vm with gpu pass through to play windows games ?

Basically the title. I’ve only ever seen huge 20 page guides on how to make it work. Is there an easy way?

Specifically on Debian or Arch with a laptop with two gpus (zephyrus g14)

in reply to shapis

Nanook

in reply to shapis 6 months ago

I used the Arch instructions on Ubuntu 22.04 wiki.archlinux.org/title/PCI_p… and it worked, but broke on 24.04 owing to broken UEFI bios on 24.04.

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in reply to Nanook

shapis

in reply to Nanook 6 months ago

Indeed. That’s the opposite of what I’m looking for though. That’s complicated and apparently breaks ?

I’m currently dual booting. Which works fine. I was wondering if there was an easier way though.

in reply to shapis

@shapis It's complicated to setup but once done works wonderfully, you can share one GPU between OS's in real time, even have one windows window up along with Linux at the same time. So I'm temporarily fuxored but I already have a plan for a fix and that is simply to steal the UEFI vm bios from Manjaro which does work and use it on Ubuntu.

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in reply to shapis

wvstolzing

in reply to shapis 6 months ago

With Proxmox on AMD gpus, it can be as simple as picking a pci device from a dropdown.

-- but then again, you'll need to learn how to properly use proxmox, esp. with respect to storage configuration. Also, the performance can still suffer, depending on various factors.

If it's not too big of an inconvenience, dual boot is the way to go, IMHO.

in reply to wvstolzing

Nanook

in reply to wvstolzing 6 months ago

@wvstolzing @shapis I personally use kvm/qemu but whatever works for you.

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in reply to Nanook

atzanteol

in reply to Nanook 6 months ago

That's all proxmox does too, just provides a gui and management tools.

in reply to shapis

Jo Miran

in reply to shapis 6 months ago

VMWare Workstation Pro is now free and I believe that it had GPU passthrough. Don't take my word on that though. I haven't used it in a few versions.

in reply to Jo Miran

Nanook

in reply to Jo Miran 6 months ago — (Shoreline, WA, USA)

@Jo Miran @shapis CPU pass through isn't JUST the function of the hypervisor, the host os, guest os, gpu drivers, and uefi bios ALL play a role.

This entry was edited (6 months ago)

in reply to shapis

variants

in reply to shapis 6 months ago

If there's a game that doesn't work on Linux because of anti or something it probably won't work in a vm either so dual booting would probably be the way to go to avoid that

in reply to variants

Nanook

in reply to variants 6 months ago

@variants @shapis Not true, a root-kit will break it in wine because wine is just translating windows sys calls into Linux sys calls, but a vm is actually running a windows kernel, then the root kit anti-cheat works fine. With GPU pass through, I have found no games that work under Windows won't also work within the VM.

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in reply to Nanook

halfapage

in reply to Nanook 6 months ago

There are many signs for software running in a VM to realize it does, especially if you want an easy setup. In theory you could mask that, in practice it would be very tedious, time consuming, and not perfect enough anyway.

This entry was edited (6 months ago)

in reply to halfapage

Nanook

in reply to halfapage 6 months ago

@halfapage I'm saying from experience, nothing I could not get to run in a VM that ran in a physical machine.

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in reply to Nanook

halfapage

in reply to Nanook 6 months ago

You can absolutely run stuff on VM with approximately native performance and it's not even that difficult to set up. I meant that it's not easy to obscure fact of running inside a VM from programs such as anti-cheats, which seemed to be an original concern.

in reply to halfapage

Nanook

in reply to halfapage 6 months ago

@halfapage Anti-cheats don't generally care if they're running in a vm as long as they can insert kernel drivers.

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in reply to Nanook

PlasticPaperplane

in reply to Nanook 6 months ago

Maybe anti-cheat software does not care if it is running inside a VM, but online-multiplayer game developers do, and they will ban you for using a VM.

in reply to PlasticPaperplane

Nanook

in reply to PlasticPaperplane 6 months ago

@PlasticPaperplane I've never been banned, but ok.

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in reply to Nanook

The Ramen Dutchman

in reply to Nanook 6 months ago

At least MiHoyo's anti cheat detects and blocks VirtualBox VMs as well as Waydroid.

in reply to The Ramen Dutchman

Nanook

in reply to The Ramen Dutchman 6 months ago

@Fonzie! Interesting, haven't played that game so no experience with it. VirtualBox does do some things a bit differently, I was not able to get flyff to run it well, it runs but at about 3fps, where as it runs normally in kvm/qemu.

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in reply to shapis

blobjim [he/him]

in reply to shapis 6 months ago

I also don't know if there's any Linux program that will automatically do the configuration for you.

It seems like it would be pretty complex since I guess you need to disable the linux host from using the GPU, and do PCI passthrough in a VM that has Windows installed.

And there's still the problem of the graphics needing to move around the system in order to get to the display instead of the display being directly connected to the GPU.

Seems like a pretty cool thing that would be neat to have a nice automated GUI solution for.

I was just looking at, seems like it's difficult but not impossible

I'm in the same boat that it seems too difficult (and I bet the performance still isn't near native).

I just dual boot and boot into Windows if I'm going to play a game.

Single GPU Passthrough Tutorial - KVM/VFIO

The world's first and world's best video tutorial on single gpu passthrough. Play video games in a Windows VM running on Linux# LINKS #Discord Invite: https:...

^YouTube

This entry was edited (6 months ago)

in reply to blobjim [he/him]

Nanook

in reply to blobjim [he/him] 6 months ago

It seems like it would be pretty complex since I guess you need to disable the linux host from using the GPU, and do PCI passthrough in a VM that has Windows installed.@blobjim [he/him] @shapis

This is all addressed by the Linux kernel and xml code specifying it for the VM.

And there's still the problem of the graphics needing to move around the system in order to get to the display instead of the display being directly connected to the GPU.

Again handled by the kernel and qemu, just requires a bit of XML code in the vm description. Not a big deal.

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in reply to shapis

xtapa

in reply to shapis 6 months ago

Does it have to be a VM? Is Steam or Lutris not an option?

in reply to xtapa

Nanook

in reply to xtapa 6 months ago

@xtapa @shapis Lutris is just wine, so any game using a kernel anti-cheat won't work under Lutris. And most of the games I play aren't steam so it does me little good personally, and many of the steam games I have tried don't work on Linux in spite of steam being installed.

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in reply to Nanook

Thorry84

in reply to Nanook 6 months ago

Most anti-cheat doesn't take kindly to running in a VM as well, so if that's the reason it won't work.

in reply to Nanook

brian

in reply to Nanook 6 months ago

proton has support for quite a few kernel level anti cheat now, although it has to be explicitly allowed by the dev. needs to be run via steam I think, but you can add non steam games if you got them elsewhere

Unknown parent

shekau

Unknown parent 6 months ago

Damn that really fucking sucks man :/

in reply to shapis

antsu

in reply to shapis 6 months ago

I have the 2020 G14 and I got this working once. I'm afraid easy and simple are not a thing here, as you need to understand what you're doing if you want it to work well.
The basics are:
- Prevent the host system from loading any drivers that touch the discrete GPU. This is done by attaching it to the VFIO driver and uninstalling/blacklisting the Nvidia and Nouveau drivers.
- Make sure you have the correct kernel parameters to support virtualisation and PCI-e passthrough.
- Create a Windows VM and attach the Nvidia GPU to it.
- Setup Looking Glass so you can play with the best possible latency. This will likely require a dummy USB-C display stick.

Personally, I don't think it's worth the hassle. I keep a Windows install for when it's needed, and do most of my gaming on a separate system.

in reply to shapis

Ptsf

in reply to shapis 6 months ago

Easy way to get yourself banned in online games just an FYI. Most online games will detect and ban virtual machines now since they've become commonplace in cheat/hack communities.

in reply to Ptsf

Nanook

in reply to Ptsf 6 months ago

@Ptsf @shapis I've primarily gamed from a virtual machine and have NEVER EVER been banned, so I don't think so.

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in reply to Nanook

Ptsf

in reply to Nanook 6 months ago

Depends on the game. Apex, Riot, ubisoft, and EA all ban vm players. A list of other companies do as well.

This entry was edited (6 months ago)

in reply to Ptsf

Nanook

in reply to Ptsf 6 months ago

@Ptsf Haven't played any of those. Anyway, there is a way to edit your xml to fake the machine id.

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in reply to Nanook

brian

in reply to Nanook 6 months ago

machine id isn't necessarily the important part. anticheat and vm detection check a lot of different heuristics incl hard to defend against things like timing attacks on particular cpu instructions. there's a handful of open source versions if you're curious

in reply to brian

Nanook

in reply to brian 6 months ago

@brian To be honest, until and unless it becomes a problem for me, not really. KVM has the host CPU executing the VM instructions so timing on CPU instructions should product identical results. I have the VM setup as CPU and GPU pass through.

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in reply to Nanook

brian

in reply to Nanook 6 months ago

even with cpu passthrough some things are still emulated. you can run a vm detector and see for yourself what tests fail.

it may not affect your games but others should still be careful since it is a real issue, and people do get banned for it.

in reply to brian

Nanook

in reply to brian 6 months ago

@brian Ok, just for kicks tell me where I can get this.

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in reply to Nanook

brian

in reply to Nanook 6 months ago

I've never used it but this one seems like the most complete currently, and it'll tell you which tests fail.

GitHub - kernelwernel/VMAware: VM detection library and tool

VM detection library and tool. Contribute to kernelwernel/VMAware development by creating an account on GitHub.

^GitHub

in reply to brian

Nanook

in reply to brian 6 months ago

@brian I have used it and with flyff at least the performance was far insuperior to kvm/qemu.

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in reply to Nanook

Sheldan

in reply to Nanook 6 months ago

The most random mention of Flyff I have seen yet, as long as you mean the game.

in reply to Sheldan

Nanook

in reply to Sheldan 6 months ago

@Sheldan Yes I am referring to the game, back when I had tried on vmware it was still the main commercial one that I was playing, I have since moved to Insanity Flyff. One of those minor continuities in my life.

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in reply to shapis

Nanook

in reply to shapis 6 months ago

Single GPU isn't substantially harder than 2GPU pass through, that is what I have done, but it does require support by the UEFI bios and the GPU and not all support it.

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in reply to shekau

TarantulaFudge

in reply to shekau 6 months ago

I mean, I hope they keep doing that because Valorant sucks. Everything about it is boring and 20 bucks for one gun wrap is outrageous. The rootkit is invasion of privacy I don't want to reboot just to play. The rounds go on for so long people just get bored and start griefing... If you leave early the game punishes you hard. There are plenty of better games to play. Not to mention it's only KB/M no cross play no ability for players with disabilities. Perfect for conservatives who only care about themselves like to have players begging to drop their wrapped guns

This entry was edited (6 months ago)

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shapis via Linux

shapis 6 months ago • •

shapis
6 months ago