Qxl Vs Virtio, QXL/SPICE is a high-performance display method. Haven’t touched it for months, but when I booted it up today - noticed that it became unusable. The speed difference was the difference in speed between an old spinning rust HDD vs an SSD. Jun 13, 2020 · qxl-dod驱动有个弊端就是，只支持WIN8. Jan 4, 2024 · Thank you. 1 Windows 7/8/10 and Windows 2012/2016 5. Yet, mouse lag with virtio on any resolution higher than 800x600 makes the VM impossible to work with, so switching to QXL fixes the issue. Continue and mount We would like to show you a description here but the site won’t allow us. Currently, there is very little information on the VirtIO-gpu OpenGL drivers for Windows guests. Jun 29, 2021 · We need to first increase the VRAM to atleast 512MB in the 'QXL Model' of the 'Video Device' section, click 'Apply', change the 'Model' from 'QXL' to 'Virtio' with '3D Acceleration' enabled, and then run the virt-manager with DRI_PRIME=1. I don't think the CPU is the problem? I know QXL isn't supposed to be native performance, but I'm unsure if the performance I'm seeing is to be expected or if there's something I'm doing wrong. One thing to keep in mind: when you click inside the QEMU window, the mouse pointer is grabbed. OpenGL rendering is software based using llvmpipe. Which give the best performance when you connect to the guest us So the video change from QXL to virtio had nothing to do with any speed increase (possibly had the opposite effect actually). QXL is a paravirtual GPU (aka a paravirtual graphics driver) with 2D support optimized for use with SPICE. Now they’re so clunky that I had to go back to GPU pass-through, including on the Linux-based VMs. Am I using the optimal software driver? I won't be able to pursue a PCI passthrough setup for another several months. Fortunately, switching to QXL, as you suggested, solved the problem completely 👍 What still puzzles me though is that when Sep 30, 2019 · With VirtIO GPU support being the newest, QXL VGA is the next best assuming driver support as well otherwise Bochs. 6起可用。 QEMU relies on the virtio virtualization standard, and is thus able to present paravirtualized virtio devices, which includes a paravirtualized generic disk controller, a paravirtualized network card, a paravirtualized serial port, a paravirtualized SCSI controller, etc …. Apr 11, 2024 · While virtio is included in modern Linux kernels and spice-vdagent by most Linux distributions, Windows requires the latest spice-guest-tools and virtio-win drivers from the virtio-win ISO (including viogpudo), but performance is currently about the same as Video QXL. 4和QEMU版本2. Create a new VM, select "Microsoft Windows 11/2022/2025" as Guest OS and enable the "Qemu Agent" in the System tab. Install Prepare To obtain a good level of performance, we will install the Windows VirtIO Drivers during the Windows installation. g. 1 Caution 8 Using Audio 9 SPICE Enhancements 10 Troubleshooting 10. May 24, 2025 · When you setup a Windows guest on KVM/QEMU you can choose between different video devices, most used seems to be QXL, VirtIO or VGA. You'll also have seamless mouse operation, inside-outside the VM window using a client like spicy or virt-manager's virt-viewer. 1. This blog post introduces them, explains the differences between them and the use cases they are good for. VirtIO (virtio-vga and virtio-gpu) is another paravirtual GPU with 2D support. Jan 3, 2024 · Before the last batch of updates, my VirtIO systems worked great. When I tried this, Manjaro was running fine, but the performance of Windows 10 VM was very choppy. Oct 22, 2025 · There are multiple methods for virtual machine graphics display which yield greatly accelerated or near bare metal performance. The default these days is qxl which strikes a good balance between guest compatibility and performance. x. Windows 10 guest - best video driver? Right now, I'm using the QXL driver, but I saw a Xen and a virtio video driver as selections on the virtual machine manager. 1 Windows 5. By default, QEMU will show the virtual machine's video output in a window. 3). Aug 13, 2023 · Laptop Acer Aspire A315 with i5 2. 1以上，不支持WIN7，不然win7就能开启AERO特效了。 3、virt gl 当升级到Proxmox VE 7. Sep 27, 2019 · There are alot of emulated display devices available in qemu. Jan 3, 2024 · A while ago I installed QEMU/virt-manager (with the help of this guide) to use Debian as a sort of learning sandbox. 1 Can't start Spice session 10. The TL;DR version is in the recommendations section at the end of the article. 2 Linux 6 Start your SPICE session 7 Using client USB devices 7. I have always seen problems with performance in comparison to bare-metal installations on hosts with exact same hardware: Start Menu “animation” looks in general slightly “lagged”, any program such as file manager, web browser, MS Office take a bit to open, CCleaner takes at least a minute or two to do even a couple of Oct 5, 2021 · QXL drivers are included in spice-guest-tools (check here spice-guest-tools). Switching to QXL fixes that, but makes the GPU performance worse. Default or virtio, they both didn't perform well under Windows desktop. Running an intel i7, 64gb of ram, and currently intel graphics (temporarially moved from an i9 w/ GTX 1650 ti, which experienced similar performance issues) w/ a gen 4 nvme SSD. 4. Well ofc they probably don't call it "Start" anymore. Introduction This is a set of best practices to follow when installing a Windows Server 2022 guest on a Proxmox VE server 8. The latter is used with a Windows 11 VM with my GTX 1060, and the former with Linux distros I'm playing with, but I don't understand how VirGL compares with GPU passthrough or VirtIO/QXL. 4 GHz, 16 Gb RAM and NVMe drive. Apr 15, 2020 · It is possibile use spice and virtio-gpu under proxmox ? the spice documetation say: " Using QEMU You need to add a virtio-gpu device on QEMU command Dec 2, 2022 · QEMU/KVM: Poor QXL performance View unanswered posts View posts from last 24 hours Gentoo Forums Forum Index Unsupported Software Gentoo Forums Forum Index Unsupported Software All times are GMT Page 1 of 1 Jump to: You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum Introduction This is a set of best practices to follow when installing a Windows 11 guest on a Proxmox VE server 8. However, it is not designed to offer near-bare metal performance. After going through that linked guide once again, I realized that I had disabled 3D acceleration. There is huge input lag when simply typing in terminal, as well as lag/glitches when interacting with DE (like dragging application windows or selecting/highlighting shortcuts Sep 12, 2022 · WARNING: virtio (even with 3d acceleration) introduces significant mouse cursor delay lag (on AMD Radeon). Oct 9, 2024 · And I tried default graphic setting (QXL, no virtio). Continue and mount your Windows Jan 25, 2026 · $ qemu-system-x86_64 -device qxl,help You can use these methods and the qemu (1) documentation to understand the options used in the following sections. I feel like I can safely dismiss the cirrus, vga and vmvga drivers. backend: Controlled via the -display argument. 1 Introduction 2 Requirements for SPICE 3 SPICE client 4 Enable SPICE for a VM 4. Similarly, OpenGL rendering is software based using llvmpipe. I get the difference between of VirtIO/QXL vs GPU passthrough. Oct 9, 2024 · I've had reasonable performance from Windows 10 guests under QEMU/KVM with just the virtio drivers (no passthrough), even gnome-boxes manages fine IIRC. 2版本的时候，你可以使用一个叫做virt gl的显卡。 这个显卡能够调用PVE宿主机的显卡，进行OpenGL加速。 如下，但也仅仅是Opengl加速而已。 4、直通 Dec 10, 2021 · Notes on running Windows 11 (or 10) in a virtual machine with paravirtualized (virtio) drivers using libvirt. Enabling it improved the overall situation (no more graphical glitches), but performance was still awful - simple window dragging was like slow motion. This guide suggests enabling "Enlightenments" in Windows should improve performance significantly (section 2. The guest needs a driver for whichever option is selected – this is the most common reason to not use the default (e. , on very old Windows versions). Aug 8, 2018 · Virgil3d para-virtualized virtio-gpu device For Linux guests, virtio-vga/virtio-gpu is fairly mature, having been available since Linux kernel version 4. 1 Caution 5 OS specific settings for VM 5. That is, when no other programs are running in Windows 10 guest, even by toggling the "Start" menu I can see some lagging. Oct 25, 2021 · Is the VirtIO GPU DOD controller superior to the QXL controller? Is there any information you can provide in regard to the viogpudo driver and the performance differences? Jan 20, 2026 · Usually one of cirrus, std, qxl, or virtio. 2 Guest resolution does not resize to Remote Viewer 它有两种不同的类型 (VGA 和 GPU)。 Virtio-vga 通常用于需要多显示器支持和 OpenGL 硬件加速的场合。 Virtio-GPU 版本没有内置的标准 VGA 兼容模式。 CG3：一种虚拟显卡，我们可以在较旧的基于 SPARC 的访客操作系统上使用。 无：在访客操作系统中禁用图形卡。 Red Hat QXL显卡或Virtio-gpu支持双显示器切换，qemu不支持硬件3D加速，mttcg效率或影响性能，适用于limbo模拟器等虚拟机环境。 Virgil3d virtio-gpu半虚拟化设备驱动 [2] virtio-gpu是一个半虚拟化的3D加速图形驱动程序，类似于 非图形virtio驱动程序 （请参阅 virtio驱动程序信息 和 virtio Windows虚拟机驱动程序）。 对于Linux虚拟机， virtio-gpu 相当成熟，自Linux内核版本4. PCI passthrough currently seems to be the most popular method for optimal performance. See this Reddit Arch thread and Gerd Hoffman's blog for using this with libvirt and spice. For servers where performance and other advanced features aren't necessary, the serial console obviously works for many along with the basic Bochs display option. nk4pt, qskl2, ijee85, kdxe, qbjely, 4p2jxm, ynsua, 2sca, tfxzm, 4fxt,