Questions tagged [qemu]

QEMU (short for "Quick EMUlator") is an open source machine emulator and virtualizer.

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Sending data from host to guest by using serial

I am trying to virtualize Cortex-M3 core by using QEMU. I decided to use LM3S811EVM machine because its core is Cortex-M3. My application constantly sends messages via UART and I can observe the ...
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Unable to use virt-sysprep on libvirt/qemu virtual machine on Ubuntu 20.04

I am trying to run virt-sysprep on a qemu virtual machine on Ubuntu 20.04. I tried the following commands: virt-sysprep --format=qcow2 -a /var/lib/libvirt/images/Debian10-1.qcow2 and virt-sysprep -d ...
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Is it possible to use VFIO passthrough with multiple GPU's to one VM with NVIDIA SLI support?

I've moved to Debian a while ago and miss a few Windows programs and especially games. Both dual booting and using WINE is very tedious (though for different reasons). PCI passthrough seems like the ...
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AIX 7.2 install on QEMU on Windows unable to accept arrow keys

I am currently trying to create an AIX 7.2 image using QEMU on Windows following these steps: http://aix4admins.blogspot.com/2020/04/qemu-aix-on-x86-qemu-quick-emulator-is.html I am now almost at the ...
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Broken RD on Windows 10 VM after software uninstall

Host: Debian 10 Guest: Windows 10 Hypervisor: QEMU/KVM (migrated from Virtualbox) GPU Passthrough: Previously Nvidia on Virtualbox, currently AMD on QEMU/KVM Issue: after migrating the VM from ...
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How to snapshot qemu vm and exclude block device?

I'm searching the web for a solution to exclude qemu devices from snapshoting like it exists for virtualbox and vmware with "persistent" or "independent" as parameter. (ref. https://serverfault.com/...
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QEMU: No visible cursor when using QXL or virtio

When I run qemu-system_x86_64 with -vga qxl/-device qxl-vga or -vga virtio/-device virtio-vga, the guest has no visible cursor. The mouse works, and items highlight when I hover over them, but I can't ...
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QEMU Guest FTP Server

I am trying to setup a FTP server (using vsftpd on debian) as a QEMU guest, using a windows host. I have tried the following command to redirect guest port 21 to host port 8409: qemu-system-x86_64 -...
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Android does not want to boot when I try to virtualize it with qemu on Windows 10 x64 bit

I would like to run Android with Qemu / Haxm on top of my Windows 10 x64 installation. For this reason I have created two batch scripts. The first one is for the installation of the iso into one hd ...
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Can I use Aero Glass with QXL (virt-manager)?

I've made a Windows 7 VM with QXL as the display adapter. I installed the guest additions and the display adapter was properly showing up in device manager. I've tried changing the QXL settings to ...
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How to make both host and guest visible on the Internet with QEMU?

Here is what I am trying to achieve. Using the bridge helper described here wiki I want to connect both my host and my guest to the Internet. Here is what I am doing, the commands roughly look like ...
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Windows qemu how to create multiple TAP-Windows Adapter V9?

I installed qemu on my Windows 10 PC. I installed openvpn tap-win32 driver on my PC, after installation, there is a TAP-Windows Adapter V9 in the system 3.I used this command to start a ubuntu VM. ...
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macos qemu tap can't ping bridge ip address?

I want to install qemu on macos and use a tap device in the vm. Below is my step. install qemu brew install qemu install tuntap, after installation, I can see tap devices in /dev/tapX brew install ...
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KVM/QEMU: How to receive multicast from NIC shown as `macvtap`

The question basically already is in the title. I am running a KVM guest with Debian @ Kernel 5.4 on a server machine host with Debian @ Kernel 5.4 as well (so host and guest run pretty much the same ...
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Image format was not specified, Specify the 'raw' format explicitly to remove restrictions

I am trying to virtualize NVME based linux in QEMU on Windows using: qemu-system-x86_64 -m 2048 -cdrom ubuntu-18.04.4-desktop-amd64.iso -drive file=nvmeimage.img,if= none,format=raw,id=D22 -...
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RTX 2080 VGA QEMU/KVM VFIO Passthrough Windows 10 black screen after driver install

So I've spent the last 20 hours trying to get a Windows 10 VM running in QEMU/KVM on Ubuntu. My hardware setup is: Saphire Pulse Radeon RX 570 (Host) MSI RTX 2080 Gaming Trio (Guest) Ryzen 7 3700x ...
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Passing through USB3 device in qemu 4.2.0 from CLI

I try to pass through a USB3 device into qemu guests (Debian or Win10). The concerning parts of the start script are: qemu-system-x86_64 \ -device nec-usb-xhci,id=xhci \ -device usb-host,...
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QEMU emulating a Raspberry Pi doesn't have Internet capability?

I'm attempting to emulate a Raspberry Pi with a QEMU ARM emulator on my macOS Catalina 10.15.1 machine. Mostly following this guide, I've been using the latest Raspbian Lite (4.19 Buster) with the ...
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Can I safely copy vmdk disk while VM is still running?

I have a virtual machine in QEMU with snapshots (vmdk-disk) and I need to have a clone of that machine in another host. But I can't shutdown this VM for some reasons and can't clone it through the ...
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Why is dmidecode returning “Bochs” for a VM running under QEMU?

In all information I've found Bochs and QEMU are two separate solutions for emulate/virtualize computers. So I got really confused when I got the results below in my Linux-VM running in QEMU. root@...
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How to display 3D Wayland inside a virtual machine?

I'd like to try Wayfire—a 3D Wayland compositor—inside a virtual machine. What are the options and requirements to make a virtual machine that can display a Wayland compositor with 3D acceleration? ...
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How can I emulate Ubuntu 18.04 on MacOS using qemu?

How can I run Ubuntu 18.04 on my MacBook Air (Mojave) using QEMU? (yes I have to use QEMU for now.) I got QEMU from here. But also got it from Homebrew as well. I've tried looking at the QEMU's ...
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Problems using libvirt to create a Win98 Virtual Machine

Recently, I encountered a need to run some Windows 98 software. I decided to use this project to learn about virtual machines (I have had no previous experience). I tried to run virtualbox on my ...
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142 views

VFIO cannot reset device no reset mechanism found

I'm trying to passthrough my USB controller to macOS (in QEMU). My USB controller is in this IOMMU group: IOMMU Group 4: 00:14.0 USB controller [0c03]: Intel Corporation 100 Series/C230 Series ...
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QEMU 4.2.0 on Ubuntu Bionic Beaver

Overview In order for me to install NPM packages on my virtual machine, I need the newest version on QEMU (4.2.0). It seems like Ubuntu Bionic Beaver (which i am using) ships with QEMU 2.0. I am ...
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QEMu / KVM: error: Unable to add bridge tap0 port vnet0: Operation not supported

In order to fully understand how the networking part works inside QEMU/KVM software virtualization environment, I decided to try to manually set up a the networking part, more or less simulating what ...
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60 views

QEMU DOS VGA seeting to make Quake demo working in 640x480?

I tried setup MS-DOS 7.1 machine with QEMU 4.2 on Windows 10 1909, but i have problem to make Quake1 demo 1.06 working in 640x480, because of QEMU VGA settings. In 320x200 its working fine. I tried: -...
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quit qemu … inside screen inside tmux

I used too many levels of indirection and now I can't get out. I used Tmux from my jump host to get into the dev host. Then I used screen to keep track of what I'm doing on the dev host. Finally I ...
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How to configure the DNS server used by a guest OS with QEMU?

My host system is Linux. I have installed and configured dnscrypt-proxy and dnsmasq for my host system. My guest system is Windows, and its network device is the default NAT device. The ipconfig /all ...
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centos 8 qemu/kvm virtual machine not working on ubuntu 18.04

My goal is to install centos 8 as a virtual machine on ubuntu 18.04 and be able to access the internet on the virtual machine and to access the host file system from the virtual machine. Ideally I ...
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379 views

QEMU/KVM cpu pinning

I have set up my VM with pci passthrough and now I am trying to set up cpupinning. How do I verify that it does in fact work? My config regarding cpu parameters: ... <vcpu placement="static">4&...
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GPU passthrough no output

I followed this guide to setup a vm with pci passthrough. My setup: MSI Z170 Gaming M7 i7-6700K GTX1080[Host] RX580[Guest] Host OS Manjaro KDE on 5.4 Guest OS Win10 I can confirm that the GPU is ...
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How to install Intel Virtualization Technology? [duplicate]

CPU: Intel® Core™ i7-4710MQ Processor Windows 10 Enterprise LTSC Hyper-V: When I install Virtualization Technology driver got below: I check the BIOS, and there don't have the option for ...
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381 views

usb-host is not a valid device name - error when trying to pass USB to Qemu

I have tried to use various variations of adding a usb device to my Windows VM but to no avail. I have a Yocto project derived Wind River Linux, withQemu-kvm` installed. The guest OS is Windows 10. ...
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QEMU ISO image throws error 0004 no bootable device

I created a Linux distro using the guide from Linux Journal. I then used genisoimage -o sunshine.iso Sunshine, where sunshine is the directory containing my source code. I then ran it using qemu-...
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QEMU/KVM & UEFI 'unsupported configuration: smm is not available with this QEMU binary'

I have dug through the search engines before coming here out of respect for you. In other words, I try hard to figure out problems before asking someone else to do my own work for me. That said, I ...
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Share data between host and guest with QEMU

I have a Centos7 host on wich i emulate a Concurrent-DOS guest with QEMU, and i have to share data between the two environnements. I am actually using FTP to send file to and from each other, but it ...
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388 views

VGA and Audio assigned to VFIO but not USB and Serial Controller of RTX 2080

Summary I'm trying to set-up GPU-passthrough on a linux host with KVM so that I might run a Windows guest for gaming. I've been having a problem where some IOMMU entries (all belonging to the GPU I ...
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How speedup qemu? My launch parameters very slow

Im try launch VM under windows 10 x64, qemu 4.0.92.0 on my rented VDS qemu-system-x86_64 -m 4G -accel tcg,thread=single -smp cpus=1,cores=2,threads=2 -boot order=d -drive file=C:\Users\admin\...
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Automatic fullscreen resolution change in QEMU?

I'm sorry if I could've googled this better. I just couldn't find a good combination of keywords to help me with this. I'd like to have my VM automatically set my xserver's screen resolution when the ...
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QEMU Corrupted Network Communication

I have the following setup: Arch Linux host (kernel 5.3.11.1) Which is then using UFW firewall (0.36) Which is then configured to only allow connections through the tun0 which is a network interface ...
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How to create aarch64 Alpine QEMU VM?

I'd like to create an aarch64 Alpine Linux VM image for QEMU. Can someone please point me to instructions on how to do so? I found this answer, but it is missing some steps, which I wasn't able to ...
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QEMU/KVM/libvirt macvtap VEPA not working - ARP request not forward

Hi I've been struggling to get guest networking working when using a macvtap in VEPA mode between two VMs on a host. I've spent hours (days) googling with no joy. Does this network configuration ...
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QEMU debugging:: Warning:TCG doesn't support requested feature: CPUID.01H:ECX

i have a problem with the qemu, first i creat a image sudo qemu-img create -f qcow2 alpine.img 2G and then when i try to lunch the alpine machine it blocks in this message error qemu-system-...
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convert kvm ide image to vmdk scsi image to use in vmware

i have a vm in kvm hypervisor need to run it on a vmware planet so i used this command : qemu-img convert -c -O vmdk -o adapter_type=lsilogic,hwversion=6 vm-101-disk-0.vmdk 11.vmdk the output of ...
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Windows 10 Home (1809 version) from EFI to BIOS or to QEMU (Virtual machine)

Old (Downvoted) Post: I have installed Windows 10 in my SSD disk, and made the mistake to install in EFI mode ... (I don't want EFI in my new installation because it will be multi-boot system with ...
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qemu-system-x86_64: warning: hub 0 with no nics

I have trouble getting networking to work with qemu: I have set-up a bridge with dhcp that is already used by LXC containers and wifi clients: br-lan Link encap:Ethernet HWaddr 00:E0:4C:68:36:37 ...
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Display Scaling with NixOS as QEMU/KVM guest

My goal is to switch to NixOS from Arch. For now, i have successfully installed NixOS in virt-manager, but am struggling with dynamic Display Scaling. I‘m aware of the xorg.xf86videoqxl-Package and ...
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65 views

How to run Live backup of Virttual Machines - Libvirt-Qemu

im Trying to run this script https://gogs.tausys.de/shogun/libvirt-imagebackup/raw/master/backup-vms.sh When i run it, it starts like this. Wed, 16 Oct 2019 12:44:59 +0200 Backup KVM online guest '...
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qemu and real network

I use GNS3 and QEMU to run some labs. (Ubuntu 18.4 + gns 1.5.4 + qemu2.11.1) I can connect QEMU to real network adapter. I config real ip on QEMU PC. And i have connection from and to it(ping\telnet\...

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