Vfio looking glass Looking Glass is an open source application that allows the use of a KVM (Kernel-based Virtual Machine) configured for VGA PCI Pass-through without an attached physical monitor, keyboard or mouse. However looking glass does feature FSR2, which does a nice job of scaling when there is a difference. Press enter while screens are off to pass through pause and turn the second screen back on. Looking Glass is just a mess, and not worth bothering with at this point, in my opinion. I don't even think it's a massive threat vector, but it exists, and i don't give microsoft access to unless I have to, especially the As PCI passthrough is quite tricky to get right (both on the hardware and software configuration sides), this page presents working, complete VFIO setups. I've followed this guide for gpu-passthrough, and looking-glass' official documentation for installation using a kernel module Repo containing the PDF for my detailed vfio configuration setup and performance tweaking. GitHub Ko-Fi Patreon Jun 1, 2024 · VFIO社群內不少人都說X570系主機板有非常好的IOMMU組分佈，而且不少X570主機板支持PCIe Bifurcation，非常適合 Looking Glass。 買X570系的壞處是不能戰未來：AM4平台不會再有新產品；它們用的DDR4記憶體同樣是夕陽產品。 Sep 27, 2022 · To change it, refer the number keys here and type looking-glass-client -m <number>. e the guest is displayed inside a window that is not entirely "fullscreen" although I am running looking-glass So those solutions aren't as snappy or low latency as Looking Glass is with a guest displaying on the same host. Nov 5, 2022 · Hello, as my title states: I have a little problem with the looking-glass-client on my Linux system. These days I seldom change the display channel on my screen and just use looking glass even when gaming. If you however insist on continuing you're on your own if you run Looking-glass uses no compression whatsoever and sends the frames over PCIe which means very low latency and very high image quality. Looking Glass Update! MASSIVE VFIO Breakthrough Incoming! Level1Linux 189K subscribers Subscribe This is a collection of scripts and documentation I used to get VFIO + Looking Glass up and running. 04 By Windows7ge February 16, 2020 in Guides and Tutorials qemu gpu passthrough vfio ubuntu 19. Edit: checked and when i plug in my monitor it successfully connects and freezes when i plug the monitor Aug 14, 2018 · Hello everyone. May 8, 2024 · 三，looking-glass-client以及win中looking-glass安装 1. And the "Looking Glass client" is the app you run on your Linux host, the "Looking Glass Host Application" (the Looking Glass Server or the Windows Service) runs on your Windows VM - mentioning this, based on your post title, just to be sure we are talking apples/oranges. Thanks EDIT: Solved looking-glass-host. exe dxgi:adapter=0 dxgi:output=2 This outputs the monitor I want, this is run on Windows not linux Apr 12, 2025 · At first I was using the nouveau driver, which seemed to work fine-ish for loading vfio driver for the 4080S and nouveau for the 980 ti. I guess that solves my problem of virt-manager complaining. After years of dual-booting between the two operating systems, Geoffrey knew there had to be a more efficient way. This is a subreddit to discuss all things related to VFIO and gaming on virtual… Pipewire, some new exciting stuff from @gnif and gold old standbys like gnif’s looking glass… also need a whole suite of howtos. This topic’s intent is to provide an official home for Looking Glass discussion outside of Discord/IRC and try to bring this community together in a commonplace. Before we begin, make sure that you have a monitor hooked up to the second GPU. I’ve been a viewer for many years and for the last year i have been following the News about vfio, looking glass and gpu passthrough with a lot of interest. I have a 5k2k monitor and it is connected to both the host and the guest however when I launch looking glass client, the aspect ratio of the window is not correct, i. As far as I know, Sunshine/Moonlight uses network streaming to send the frames and hence uses compression to make it work. I heard it works pretty well and will give you that seamless side-by-side apps. If you manually force it to start it stops right after some seconds again. It doesn't seem surprising that you get some jitter in the latter use case. Originally set for a Thursday, December 14 release date. Added XML things, added video none with display spice, built the program from source, installed the host on the vm. That said looking glass only uploads frames to the host when they're actually different from the previous frame, so you might not get 144 frames a second. A macOS server would need to be quite different since the Looking Glass server relies on Windows APIs. 7 KDE Plasma 5. - gnif/LookingGlass Oct 25, 2024 · On Windows, let's use Looking Glass to see what is rendered on Windows Machine. Change Log B7 [D12] Implemented indirectCopy mode for GPUs (Radeon) that fault when DMA is used to write directly to IVSHMEM (slower, but still faster then the DXGI backend). I"m doing GPU passthrough with Looking Glass. Jun 11, 2023 · Looking Glass Looking Glass 是 VFIO 的延伸。 VFIO 因為把你指定的顯示卡送給了Windows虛擬機，用家需要另外連接這顯示卡和螢幕，然後切換螢幕的輸入源才能看到虛擬機的畫面。如果你只有一個螢幕，那麼同一時間就只能看到Linux或Windows虛擬機其一的畫面。 Looking Glass 能解決這個問題：它將Windows虛擬機的原 Is there a beginner friendly guide available on how to just directly create a looking glass VM? That doesn't exist because you need to set up your VM without Looking Glass first. Nowadays I can't really tell the difference between native, USB controller passthrough and Looking-Glass (SPICE) input latency wise. io/ Forum thread: https://forum. VFIO solves the problem by hijacking your graphics card, and reserving it for 44 votes, 13 comments. looking glass spice mouse, how to get re-capture when moving cursor off of and back onto the looking glass window? Feb 6, 2023 · r/VFIO - GPU Passthrough + Looking Glass + no external monitor/dummy 59 votes and 6 comments so far on Reddit When you're running "smooth as silk", the host is idle, right? With a looking glass configuration you're asking the host to do some work and your CPU pinning requires that every core is shared between the host and guest. A macOS client seems not useful given macOS’s lackluster hypervisor capabilities. io/ Text of commands used: / tutorial-the-ultimate-linux-laptop-for-pc- more Oct 5, 2021 · If I want to make spice display the GVT-G output, I have to tell it not to listen to any addresses/ports or I will get errors and the VM won’t run. Perhaps try configuring at least one core exclusively for the host. - vfio-setup-docs/A streamlined VFIO+LookingGlass setup guide. See the documentation for how to configure your Virtual Machine to make use of this feature. I use this method and haven't noticed any latency issues The looking-glass got me pretty grumpy about the need for two display cables on macOS, so wanted to ask: is there any solution, that might allow me to run macOS with GPU acceleration in looking-glass fashion? Sep 21, 2025 · Can you use VFIO and Looking Glass to play Xbox Game Pass games and avoid Windows? Here's what the community says. 80GHz 32GB DDR4 Ram Speed: 3200 MT/s Radeon RX 6600 (Linux GPU) Radeon RX 590 (Windows VM GPU via vfio) AsRock Taichi X570 lspci output for RX 6600 https://p. Right now I'm using evdev to hot-swap my keyboard and mouse between my host and my VM, and am using my monitor to switch inputs between the host and the VM. That should be it for setting up Looking Glass. If you don’t use LG, then you’ll need to dedicate a separate monitor, or an input on a shared monitor to that VM. However, my friend’s setup does not require any external monitor connection. Looking Glass is just an application that runs on your VM that captures the screen and sends it to the application on the host. nix is a module to augment the virtualisations subtree by the ability to create shared memory files. VFIO solves the problem by hijacking your graphics card, and reserving it for Working Windows VM with GPU Passthrough and Remote With Looking Glass I deleted /dev/shm/looking-glass and now looking glass is complaining about permissions lol. Not sure if macOS has comparable APIs. 04 GPU Passthrough Linux Windows Qemu Looking Glass Hardware Acceleration Libvirt Graphics Virtio-Win The guest will have two monitors, I just want looking glass to capture one of them. T… Looking Glass now supports the audio transport via the SPICE protocol. 选用并安装looking-glass-client B6版本，因为B6版本使用了spice支持了音频传输而可以不在使用scream。 但是looking-glass-client在官方源中版本仍然是旧版本（主客机版本不同不互通），所以这里采用了源码编译的方式。 Jul 3, 2020 · Hello fellow linux fiddlers, I tried one year ago to set up my computer to use QEMU/KVM + Looking Glass on Ubuntu Studio 18. sicp. So if you need higher than that, that may affect your decision. 44 votes, 13 comments. This is required for looking-glass and Hi, Ive tried to setup looking glass on win11 today and it fails to start the host service on the win11 side. I received my 4090 today (ASUS 4090TUF-OC) and when i remove the 780 from the system and replace it with the 4090, it is recognized by arch is working find within linux May 31, 2018 · Figured I would document my recent success in getting a Threadripper system to pass through both GPUs to VMs without requiring a third video card, or any kernel patches. Looking glass is working perfectly, except that I have to switch to the guest and start it by hand first. me/p9jYi in short: LnkSta: Speed You may now boot the VM and open Looking Glass. Now the answer is yes and yes. . Quad-core CPUs quickly become a Looking glass is buttery smooth for me. I haven't heard much about looking glass since it was announced. Caveat is that it only runs locally on your computer. My setup, on the other hand, stucks with looking glass splash Dec 14, 2017 · In the world of PCI passthrough few things have excited me more than the release of the new Looking Glass project from gnif over on the Level1tech forums. If I want to use Looking Glass, I need Spice to listen to localhost. You can forward the display to the Linux side with Looking Glass, but the Linux side also needs a Have been considering trying Looking Glass for a while (as opposed to my current pass-through and second monitor input blah-blah) but had been somewhat "put off" by the seeming requirement to use an automated login for Windows. I started going down the packet capture path to see if i uncovered anything, but it's far easier to just use a kvm or move usb ports, so the reward wasn't worth the pain. A Headless HDMI Dongle or an additional HDMI cable connected to your discrete display adapter will also be needed to make GPU render video to be passed to Looking Glass. But I can be wrong and I want to be sure that it's impossible (Intel SR-IOV + Looking Glass) I tried the vfio thing 6 months ago and ended up giving up due to various complications. These frames are then sent to the shared memory file and the looking glass client renders these frames on the host. Looking Glass Dependencies on Solus can be found here on the Looking Glass section, if you're also using it. Just don't forget to add the relevant AMD or Intel VFIO arguments to your kernel's boot arguments. Works ok, but I can use my card inside the VM without a HDMI cable attached to its card, which is totally understandable. For reference it's running at 1080p, and my main display is at 4k. Dec 6, 2022 · Me and my friend both use looking-glass to access our Windows 10 VMs, we all use virt-manager to configure our VMs. Hey guys, I have a vfio setup via looking glass and it's really pixelated as compared to a native image on another monitor. Details on how to setup VFIO can be found at my site https://mcgi We make creative stuff and talk about the technology behind it Linux is cool, VFIO is cool, blender is cool. An extremely low latency KVMFR (KVM FrameRelay) implementation for guests with VGA PCI Passthrough. Donations If you like this project and find it useful and would like to help out you can support this project directly by using the following platforms. IMO its the easiest method, just works, and gives you more control (for example looking glass has a mute audio option). Dec 10, 2023 · The first consideration is the display. This is a subreddit to discuss all things related to VFIO and gaming on virtual… What is VFIO? When virtualizing an operating system like linux or windows, the main drawback is the lack of a proper graphics driver to bridge the gpu in your computer, to what the virtual machine guest can interact with. 0. AMD Threadripper 2920x Asrock X399 Taichi 4 x 8GB RAM First of all, I changed the BIOS from UMA to NUMA as it is supposedly better for latency. 讓宿主機重新使用直通的GPU 不重開機情況下，將虛擬機關機與解除vfio-pci綁定，再載入Nvidia核心模組即可重新讓實體機存取顯示卡。 Aug 8, 2022 · All Posts C++ Posts GPU Passthrough + Looking Glass + no external monitor/dummy This page summarizes the projects mentioned and recommended in the original post on /r/VFIO Bigger the resolution and higher the refresh rate, the more of a resource hit you'll be taking with looking glass afaik. Aug 27, 2021 · For a VFIO setup, no you don’t need Looking Glass. Feel free to ask for help or discuss the project here. " I don't have the PCI Standard RAM Controller on the device manager of the windows VM There is a difference between Microsoft doing some contributions to the kernel, which then gets reviewed by kernel maintainers, merged + tested with distro maintainers and then to my machine than vs Microsoft being able to read/write my boot partition/kernel. Cyberpunk 2077 running on Linux with VFIO GPU pass through and rendering with Looking Glass. This script assumes you already have a working Windows 10 guest set up for Looking Glass and GPU passthrough. Edit: checked and when i plug in my monitor it successfully connects and freezes when i plug the monitor Mar 10, 2024 · I found Notes on PCI Passthrough on NixOS using QEMU and VFIO and GitHub - j-brn/nixos-vfio: NixOS modules to automate vfio setups which you might find interesting. 1 I was previously using scream for audio (and microphone wasn't a thing in the Windows guest) but now that Looking Glass supports it, I decided to try it (and to ditch Scream). Thanks for the quick response! Virtualization Support Relevant source files Purpose and Scope This document describes the virtualization support features in Bazzite OS, focusing on how users can enable, configure, and manage virtualization technologies such as KVM, libvirt, VFIO GPU passthrough, and Looking Glass (KVMFR) using the provided ujust command system. A reboot of the VM may fix the issue This has me wondering, is there anything like "host to host" looking glass? As in, could one use an iGPU for all monitors, run the Windows VM with looking glass, but then render native software on the GPU and do Looking Glass (or similar) frame relay? Aug 31, 2019 · Hello, I started playing today with my VFIO configuration to extract some more performance theoretically. Looking glass update (indirect display host driver!) : r/VFIO r/VFIO Current search is within r/VFIO Remove r/VFIO filter and expand search to all of Reddit Dec 30, 2020 · Basic Looking Glass setupThe LG_Host running in your VM will dump the frames to be rendered to the shared memory device, and you can use a the looking-glass-client to render those frames in either the Host OS or another Guest VM depending on what type of setup your running. I'm trying to see if there's a way to enable NvFBC, and if that would help. Along the way, I’ve run into problem after problem, many of which were problems that required multiple hours to figure out, so I’m making this thread to put all the problems and I did all of the things needed in the installation guide. Using this setup I was able to start my Win 10 VM with GPU passthrough, but there were issues with using Looking Glass, my cursor would have significant delay and Looking Glass would use llvmpipe as renderer. And I want to connect to my virtual host using looking glass. 04 LTS. Hi all, I am using Looking Glass on a KVM machine but I am unable to get the correct aspect ratio on my ultrawide. There is no logfile present in %TEMP% and if you start it via cmd manually it just complains not finding any looking-glass. Any suggestions Mar 9, 2024 · B7 Release Candidate 1 (B7-rc1) After many months of hard work from our team, I am pleased to announce Beta 7 Release Candidate 1 which again contains a huge amount of changes along with some very exciting new features. 2 X11 AMD Ryzen 7 5800X @ 3. First of all here are my specs: Arch Linux Linux 6. 26. If Looking Glass does not work, I recommend connecting a display to the graphics card that you are passing through and using the output there to diagnose the issue. Also worth noting that loooking glass will preserve aspect ratio, so there is no stretching. Curious if this change will now allow me to perform normal Windows login (via Spice) while then switching automatically to Looking Glass once logged in? Oct 20, 2019 · Now the VFIO QEMU/KVM w/ Looking Glass tutorial as a whole I’ve uploaded and am updating/expanding, that’s something to want to look at if you’re curious but it sounds like you’ve already done this yourself. Oct 7, 2019 · This is the official topic for the Looking Glass KVMFR Project. Looking Glass Update! MASSIVE VFIO Breakthrough Incoming! Check it out here: https://looking-glass. Requirements: The primary video Jan 30, 2021 · Since the Looking Glass project was first announced back in 2017 the project has grown enormously thanks to the efforts of those in this community and others. The quickstart guide (PCI standard RAM Controller) says on the windows vm to "update the driver for the device "PCI standard RAM Controller" under the "System Devices" node. Not much luck so far, I'm afraid. This will be just a quick rundown for those that are looking to do the same, I will not be providing help or support on this, but it should get you started should you be looking to do the same. Sometimes Looking Glass can take a while to start or Windows will refuse to start it. It worked for some time then i tinkered with hugepages and some XML stuff and it is now stuck in Starting session. If you have a problem, it might have been stumbled upon by other VFIO users and fixed in the examples below. So, as succinctly as you can, share your vfio success story or failure. As I know Looking Glass requires framebuffer on the card. BTW, I am so happy today and I hope this post can be helpful LookingGlass demo using KVM and VFIO to play windows exclusive video games in a VM running on LinuxI have a "zero to hero" tutorial series here: https://www. Even my partially retired desktop from 2011 (i7-3930K, ASUS SABERTOOTH X79, 2x16GB DDR3, 2x SATA SSDs mirrored) can run this script with the two older NVIDIA GPUs in it with a Looking Glass client window on its desktop to the guest. [Windows] User switching should no longer cause a crash Jun 2, 2021 · sudo systemctl restart libvirtd Start the VM, and run Looking Glass with this additional flag (if you have other flags, they'll still work fine, just ensure this flag and its option are at the end): looking-glass-client -f /dev/kvmfr0 You should see Using DMA buffer support in the terminal while running Looking Glass if you've done this properly! Jun 2, 2021 · sudo systemctl restart libvirtd Start the VM, and run Looking Glass with this additional flag (if you have other flags, they'll still work fine, just ensure this flag and its option are at the end): looking-glass-client -f /dev/kvmfr0 You should see Using DMA buffer support in the terminal while running Looking Glass if you've done this properly! Mar 6, 2025 · Once B7 has released focus will move almost entirely onto fininshing the Looking Glass IDD host. 04 virt-manager Share Followers 6 Mar 6, 2025 · Once B7 has released focus will move almost entirely onto fininshing the Looking Glass IDD host. Over the past 3 days, I have gone through the extremely painful process of getting a Windows 10 Virtual Machine with PCIe Passthrough working adequately on a fresh install of Ubuntu 18. Introduction Note: While this setup is possible it is ill-advised, Scream does not benefit from using IVSHMEM in any way, if anything it increases CPU load and latency due to the polling nature of the implementation. Did anyone manage to start looking glass host on Hi all, I've got pass through working, evdev working, hugepages configuration working, and now I'm trying to configure looking glass. May 27, 2025 · Hi all, new here. In some situations, the video card will fail to properly initialize if one isnt attached. What can I do? The world's first and world's best video tutorial on single gpu passthrough. Thanks for watching our videos! If you want more, check us out online at the following places: Oct 25, 2024 · Looking Glass is a solution that allows the framebuffer from a display adapter connected to a virtual machine to be redirected to the host, enabling the drawing and capturing of images. Looking Glass needs to select monitor #2: Bit of a hack. level1techs. If you feel like one you make deserves to be on this list, please let one of us know. After Feb 26, 2024 · February 26, 2024 17 min read Guide Virtualization Kvm Ubuntu Kubuntu Xubuntu Lubuntu Ubuntu 22. A few weeks ago it was time again to build a new pc i wanted to put all this to a test and got a Minisforum BD790i X3d and Asus Prime 9070 XT, reviews for both i saw in L1 videos and they looked nice. The title says it all. I ended up running chmod 777 /dev/shm/looking-glass. Feel free to look up users' scripts, BIOS/UEFI configuration, configuration files and specific hardware. xml contains the libvirtd xml dump of my Windows 10 guest It is customized to my setup, I only use this one for gaming virtualisation. Now that the ryzen kvm issue is resolved and looking glass looks like like it will resolve other complications, I'm thinking about buying a 1030 for my host card and giving it another go. He has no HDMI cable/dongle connected to the GPU for VM, and yet, he’s been able to start VM and get looking glass to work just fine. The upside of this is that you can stream it to a completely different device Sep 28, 2019 · Looking Glass Looking Glass is a piece of software that can capture the video output of a GPU passed through to a virtual machine and share it with the host by writing it to an Inter-VM shared memory device. ini file and does not start either. ids and black listed the drivers but im getting iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=0000:05:00. If you're using any decent resolution or refresh rate, it won't be able to handle it, and you'll get very poor performance. 35 votes, 10 comments. And I do consider myself a competitive gamer. nix contains the relevant snippet of my configuration where I use preexisting modules and my custom ones. The Looking Glass client can read from that device and display the video output on the host machine. How can I trick windows to think that there is one? Is there any way to do this with Qemu? Have you ever played a game in a SPICE virtual display? (its terrible) Full test footage here: • [VFIO Benchmarks] Looking Glass vs SP Tutorials for how to set something like this up Because Looking Glass sends frames directly into memory for the host to draw, opening a Looking Glass window to your guest is the absolute lowest latency experience one can hope for while using the host as the primary desktop experience. As far as I know, there ain't much you can do with a single GPU if you want the Linux desktop and a game on Windows. pdf at master Dec 14, 2017 · The highly anticipated headless VFIO package, Looking Glass, was released early tonight at 4:30 PM PST. Looking Glass solves this limitation by bringing the output to your native Linux environment just like you would see your VM from VirtualBox and allows you to interact with it directly. [demo] VFIO in 2024 // windows + linux BlandManStudios 5. The latest looking glass supports Spice audio, which includes microphone support if needed. With Looking Glass, you can capture the video output of the VM and display it on the host like any other application. But yeah, it works really well, if a little slow, maybe? Welcome to the Looking Glass Community Wiki Looking Glass is a free and open-source application, which allows the use of a KVM (Kernel-based Virtual Machine) configured for VGA PCI Pass-through without any attached physical monitor, keyboard or mouse. Also it helps with debugging issues that will most assuredly arise. But it's impossible without any display connected. Just add a spice sound device to your VM and looking glass will do the rest. Jul 22, 2024 · 參見 設定Looking Glass 注意Looking Glass Host與Client的版本需一致。 Ubuntu 24. Here are some curated threads we the community think to provide a great resource for Looking Glass or VFIO Passthrough. e. This is my workaround. Looking glass is pretty good software that makes use of dxgi to duplicate frames quickly with very low latency on the guest vm. I did as recommended in the looking glass Readme. g: Right Ctrl is 97, so you should type looking-glass-client -m 97. Thanks to remarkable advancements in VFIO support, particularly the exceptional PCI The Looking Glass Host application captures frames from the guest OS using a capture API, and sends them to the client —be it on the host OS (hypervisor) or another Virtual Machine—through a low-latency transfer protocol over shared memory. Typically, we want to run a Looking Glass VM headless. I'm running looking-glass on an RX6400 and the iGPU of an 11400 (HD730 graphics) and the latency in looking-glass client seems to be less than one frame at 60hz Do you mean server rather than client? The client is the viewer, the server is where video is sent from. Passthrough Nvidia dGPU to kvm using VFIO and looking-glass, and get rid of the dummy plug by indirect display driver - phanen/passthrough If the parsec works, I think the looking-glass can also work. Dumb question / suggestion (because it worked for me) try changing your cpu model to anything thats not host passthrough/model, doing that fixed it immediately for me, don’t know why because ive never had to change it before its always ‘just worked’ if someone Looking glass is pretty good software that makes use of dxgi to duplicate frames quickly with very low latency on the guest vm. We would like to show you a description here but the site won’t allow us. Only once that was all working did I start making changes to the libvirt domain XML for the PCI pass-through. Dec 9, 2022 · I’m also experiencing this exact issue, system boots in just fine without the ivshmem device, crashes instantly when added. Looking Glass is the brilliant brainchild of Geoffrey McRae from HostFission, born out of his unwavering determination to find a better solution for seamlessly integrating Linux and Windows. Does any signed IDD driver exist? Looking Glass - Is an actual monitor or EDID emulator mandatory for Looking Glass to work? Jul 24, 2022 · I've been working on setting up a windows 11 vm with a secondary GPU being passed-through. This is a subreddit to discuss all things related to VFIO and gaming on virtual machines in general. First you must build the client from source code, see Building. just add the deviceinstaller64 enableidd 1 (the line is from the link above) to task scheduler with startup as trigger, don't forget using admin user. getting a proper W10 VM), I failed the Looking Glass part, and had issues with a bad GTX 1050 on top of it. 46K subscribers Subscribe May 7, 2022 · A friend asked me if Looking Glass is necessary and if I've ever tried gaming in spice. 04已收錄 looking-glass-client 套件，不需要手動編譯了。 8. It covers the automation, kernel argument management, and user After installing Looking Glass on a Windows 10 guest (intended for GVT-g approach on GPU passthrough), trying to run it from command prompt throws… Looking glass will always up or down scale the guest's frame buffer to the size of the looking glass window. So i was wondering has anyone here actually went through the source code of looking glass, looking for anything suspicious? Do you guys think its safe to build and run it? Be very careful with this thinking. GPU passthrough on Arch Linux and integration into Hyprland and Qtile with RDP and Looking glass. The Official Documentation contains installation instructions for Debian-based distributions and should work fine on derivatives. Aren't there programs like Remote Desktop, VNC, etc that do this? Looking Glass is pretty cool: https://looking-glass. Then I followed the instructions on the Looking Glass wiki. The ultimate purpose of VFIO is to be able to enable PCI passthrough, which allows us to passthrough a graphics card to a virtual machine. [Windows] User switching should no longer cause a crash Jan 29, 2025 · Hey yall, I’m trying to switch the gpu I use for my vfio/looking glass setup I updated my grub to have the new pci-stub. If you are new to VFIO passthrough, then these links should get you started: The Looking Glass IVSHMEM device driver was also installed according their instructions. Jul 18, 2023 · "DMA mapping failed" when trying passthrough with looking-glass #4662 Answered by rafaelgieschke srett asked this question in Q&A usage. I’m planning to use it for a few things where linux is not yet With Looking Glass, I'm only getting about 30fps for the Windows app I'm running. 38K subscribers in the VFIO community. Feb 16, 2020 · VFIO GPU Pass-though w/ Looking Glass KVM on Ubuntu 19. win_vm. The recommendation is to either plug a cable into your GPU from a secondary input on your display or buy a DisplayPort Dummy plug or an EDID cloner. I've tried Looking Glass in the past but I found its performance to be rather poor, I'd have to give the VM 10 of my CPU's 12 cores to get about 30FPS. Currently we support output via PulseAudio and PipeWire so this should just work out of the box for most people. 0 address=0x100314eb0] I had everything working for the past year with my gtx1080 being passed through and my gtx1060 as the host device. In order to install Windows, the drivers and all, you need either the fake GPU or use a So you can pass the token straight to a spice-viewer app, but I couldn't figure out how to pass my token directly to the looking-glass executable easily. Up until this point, I've successfully set up (and used) rdp, virtio-drivers, gpu-passthrough and a windows install on a passed-through SSD through virt-manager flawlessly. The problem is that Looking Glass requires a virtual display to work. If you are going to use Looking Glass it’d be the last step of the process after the VFIO setup is I finally set up Intel SR-IOV iGPU vvirtualization for 12gen CPU. I didn’t want to change Pipewire to running as a system daemon. After this you can either mirror the displays so that if the looking glass app crashes you will be able to use spice on windows, or for full performance disable the spice display and just let looking glass handle it. Are there any other options to display the output of my VM's GPU as a window on my host If you want to use Windows primarily and run some Linux apps, your best bet is WSL2 rather than VFIO. Here are the raw benchmarks and gamepl May 29, 2025 · Setup Qemu for GPU Passthough with Looking Glass and Scream support. Do you have an external monitor connected to the laptop, or how are you making sure the display is being output through your preferred GPU? And just as a heads up, looking-glass is not likely to work very well on a setup using an integrated GPU for the host to begin with due to bandwidth constraints. Up until a few days ago now we have been using #looking-glass on the VFIO Discord server, however as we have grown it has become untenable to manage the triage requests along with the development work of the now several developers Jul 29, 2018 · Looking Glass What is looking glass? It is a program that uses DXGI (or NvFBC if you're on Quadros or better on Nvidia) to directly capture what is displayed on a video card in a windows virtual machine and then display that on a QEMU/KVM Linux Host in near real-time. Looking Glass is basically a (wonderfully) glorified VNC-like viewer, so switching to Arch/Wayland/Hyprland shouldn't negatively affect anything. Oct 18, 2022 · All: This has been resolved, see: [SOLVED] Help with Dual Nvidia GPU and Looking Glass - #17 by wallacebw I was playing with looking glass with a Arch system this week with a 3090 (Primary) and a 780TI (assigned to guest). Client ¶ The Looking Glass Client receives frames from the Host to display on your screen. Step by step guide to passthrough a second graphics card into a virtual machine for full gaming Pipewire, some new exciting stuff from @gnif and gold old standbys like gnif’s looking glass… also need a whole suite of howtos. Building curated VFIO community resources I’m either going to write them, or link them. com/t/looking-glass-b7-has-been-released/227008. The following are supplemental guides for other distributions, which do not work using the Debian instructions. Looking Glass v6 now supports spice audio, but how to get the microphone working? OS: Gentoo, Windows 10 guest, Qemu 7. I wanted to build When using Looking Glass, do I even need any kind of frame synchronization (VSync, GSync or FreeSync)? In my mind it makes sense that since Looking Glass is not an actual monitor, it shouldn't lag behind frames and create tearing, or does it? And in the last case, how do you solve this issue without using VSync? Do FreeSync/GSync work? GPU passthrough and Looking Glass without having a HDMI cable attached to the card. e. 04, but although I succeeded in the first part (i. Looking Glass, I only have one monitor connected, but it's behaving like I have a second This might be a Windows issue more than a VM issue, but I hope I can find some help here either way I set up GPU pass through and looking glass on my 1080p monitor, but it doesn't look very good upscaled on my 1440p monitor. Play video games in a Windows VM running on Linux# LINKS #Discord Invite: https: Just looking to do Looking Glass ironically! Thank you for your hard work sir. But I’m still eager to getting it to work. Looking Glass doesn't work great on iGPUs due to their low-bandwidth so you would likely be maxed out at 1080p60. I know that this is possible using virtual display adapter (indirect display driver), but I couldn't find any signed driver (only self signed built from microsoft sample driver). Aug 14, 2018 · Hello everyone. config looking-glass on both guest and host, and it would work well. Scream operates far better over a vfio-net device which is already a zero-copy data transfer via shared memory. 04 Ubuntu 24. It also handles input, and can optionally share the system clipboard with your guest OS through Spice. I have not installed it so I don't know if this is possible. As I understand these SR-IOV gpus can be used only as render cards (as example for 3D intensive software over RDP) or for multimedia transcoding using hardware GPU decoders. Stability will mostly depend on how you have your VM setup and VFIO configured. Next, I pinned cores 6 - 11 and their respective threads to my Windows VM and added numatune strict and nodeset 1 in my VM definition. jhtqe xwhzjn ipkkahk axkao gjv znpjtne rtvy fmrwh kola jfkyl uppuqf pdwiz ncd lskrsil zrvqdzxw