Questions tagged [virt-manager]

Questions regarding virt-manager, a GUI tool that allows the user to interact with KVM.

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Boot Physical Windows Drive with Virt-Manager/QEMU

I have two separate hard drives in my computer. The first is Kubuntu. The second is Windows 10. I've successfully gotten the Win10 drive botted and running in VirtualBox. However, VirtualBox does not ...
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390 views

Setting up a bridge for host and vm

I'm having quite a lot of problems setting up a network bridge for both my host and my vm to use. The host (os of the server) is Ubuntu 20.04.4 LTS. The VM (using KVM and virt-manager) is TrueNAS Core ...
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Is it a good thing to run virt-manager as sudo?

I just installed qemu-kvm and virt-manager. But when i run virt-manager by clicking the icon it is not connecting to kvm. But when i run $ sudo virt-manager KVM connects. i've been told that running ...
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Connection Details is greyed out in Virt-Manager | KVM

I'm trying to edit my connections and Connection Details is greyed out in Virt-Manager. Does anyone know why? I've never encountered this before. This is happening on Ubuntu 21 most updated version on ...
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Virt-Manager NAT network interfaces stop working if host connection is restarted

I'm running Ubuntu (Mate) 20.04 on a workstation and I often use virt-manager to host various virtual machines for testing purposes (not for production VMs). I have found that if networking on my ...
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problem on ubuntu bridges installation

I'm following the instructions, but it is not working. Here is my original 00-installer-config.yaml file: # This is the network config written by 'subiquity' network: ethernets: enp2s0: ...
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1k views

How to enable 3D acceleration on Windows VM in virtual machine manager

I have tried setting Type to Spice server and opengl on in display Spice and in Video Virtio setting the model to Virtio and 3D acceleration on, but that made the Windows VM unusable because of the ...
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Virt-manager missing architecture types

I am running 21.10 with virt-manager 3.2.0. I have installed: qemu-system-aarch64 qemu-system-i386 qemu-system-x86_64-microvm qemu-system-arm qemu-system-x86_64 qemu-system-x86_64-spice ...
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2 votes
3 answers
3k views

What are the different versions available as Ubuntu cloud-images?...General Guide for Ubuntu Cloud Image use in Virt-manager 2021

I'm soooo thrilled to finally find prebuilt Ubuntu images. I was using osboxes, but the file size when converting is 500GBs and tedious to compact. Fresh installs are tedious, especially when 90% of ...
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  • 608
1 vote
0 answers
333 views

Enable BRIDGE network for Virt Manager in Ubuntu 21.04 with a Wireless Network only

I've been using Boxes without any problem, the only missing functionality is to access the network outside the guest environment (Boxes Sandbox), from/to another computer in the same LAN. Because ...
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1 vote
1 answer
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Ubuntu MATE: How to enter and exit full screen view using key combination in virt-manager?

Is there a key combination to enter and exit fullscreen view in virt-manager, while a virtual machine is running, and its window open? Obviously I can enter or exit using mouse: To enter: Click View &...
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VMs reset after suspend

Sometimes, when I close and open the notebook lid, my VMs are like this. It appears locked but actually what happened is that all the apps got closed and I to unlock the screen and reopen everything. ...
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494 views

virt-manager windows 10 guest usb passthrough logitech brio webcam

here is my setup: host: ubuntu 21.04 libvirt: v7.0.0 guest: windows 10 pro N (version 21H1, OS build 19043.1083) i am trying to connect my logitech brio webcam to the guest machine. i set up the ...
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1 answer
457 views

How to use microphone in KVM, virt-manager based Virtual Machine?

I am using Ubuntu 20.04.2 (64-bit) as host and Q4OS(32-bit) as guest. I have added camera from USB host devices and hence it works now on using google meet in virtual machine. But I am still unable to ...
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2 votes
2 answers
12k views

How to use OpenGL/3D acceleration in virt-manager with ubuntu?

Currently on Ubuntu 20.04 both as host and guest, I followed http://ryan.himmelwright.net/post/virtio-3d-vms/ and activated 3D acceleration on video, and OpenGL on dsplay, but on VM launch I get SPICE ...
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3k views

How to redirect an USB 3.0 device to VM in virt-manager?

usb 3.0 devices never worked on virt-manager for me. I'm running Ubuntu 20.04 on both host and guest, and only 2.0 redirection works. When I do 3.0, it simply does not appear on the guest on lsusb ...
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934 views

libvirtd[num]: Failed to open file '/sys/class/net/veth7a03557/operstate': No such file or directory

I want to install virt-manager and kvm, I done it but when I write It shows me error below sudo systemctl status libvirtd.service jūn 11 12:04:25 intelli5 libvirtd[916]: Failed to open file '/sys/...
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1 vote
0 answers
46 views

Ubuntu server does not detect DHCPv4 on virt-manager

I am installing ubuntu server on virt-manager but it can not detect DHCPv4. I click continue without network then it gives me error below when I install or update something failed to fetch http //...
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1 vote
0 answers
740 views

KVM-QEMU-SPICE: drag 'n drop files from guest to host?

Spice's guest tools work well for file transfers from host to guest, but don't work from guest to host. Spice's Webdav extension is a good workaround, but it has drawbacks (doesn't work from virt-...
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Is the allocated number of CPUs freed to the host machine when I pause the virtual machine?

In KVM virt-manager, is the allocated number of CPUs released from the VM to the host machine if I pause the virtual machine? If the allocated CPUs are released when I pause the virtual machine, I ...
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2 votes
1 answer
2k views

What is CPU topology in kvm virt-manager?

In KVM virt-manager what is the meaning of Sockets, Cores, and Threads ?
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1 vote
1 answer
471 views

Unable to install virtual machine that has passthrough NIC. Is there a fix?

Can I install VM with passthrough NIC? I did all the required steps. I enabled iommu in /etc/default/grub and I ran the script that show me iommu groups. Here is the output: IOMMU Group 0: 00:...
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2 votes
1 answer
4k views

Using Webcam and Microphone in Virt-Manager

I have a Kubuntu 20.04.1 LTS as my Host OS, and I have a Fedora installed as guest using Virt-Manager. Is it possible to use the built-in Webcam and Microphone of my laptop in the Guest-OS using Virt-...
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2 answers
470 views

Ubuntu 20.10 VM restarts sometimes after wake from sleep

I'm runing ubuntu 20.04 on the host and Ubuntu 20.10 on two VMs. I always let them open and running. Sometimes, after waking the laptop from sleep, one of them has the screen locked (they both are ...
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50 views

What to do for reusing backing images for Ubuntu guests?

I am currently using virt-manager on Ubuntu desktop to make VMs to test things and so I want to use backing images to quickly bring up a system whether it's a desktop or server install. Afterwards, I ...
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1 answer
2k views

No internet connection on host when Ethernet is Bridge for Guest VM (Ubuntu 20.04)

I setup a bridged connection modifying the netplan file in /etc/netplan/ and setup the bridge device using nmcli. Below is my netplan file: # Let NetworkManager manage all devices on this system ...
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2 votes
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how to disable msr in virt-manager on ubuntu 20.04?

I'm trying To passthrough ethernet adaptor, i enabled immmou, when i boot the virtual machine it give me this `Error starting domain: internal error: qemu unexpectedly closed the monitor: 2020-08-...
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0 answers
268 views

If I reinstall qemu on my machine will all my vm data be deleted? Is there anyway that I can preserve my VM data?

I'm having some issues with qemu. For some reason libvirtd.service does not initialise during startup even though it's enabled in systemctl. I have to manually enter the sudo systemctl start libvirtd....
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1 vote
1 answer
1k views

How to disable exit full screen popup in virt-manager

I'm using virt-manager with kvm, however I've found that in fullscreen mode (with spice), the exit fullscreen popup gets in my way often. Is there a way to disable this popup from showing whenever I ...
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1 vote
1 answer
392 views

Virt-Manager gui missing "light bulb"

I installed "virt-manager" 2.2.1 on my 20.04 desktop and created a VM in it. I find that many of the settings require clicking the "light bulb" on the toolbar - but mine doesn't ...
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2 votes
1 answer
4k views

Error getting virt-manager to work with LXC

I'm trying to get virt-manager working for LXC containers in Ubuntu 20.04 beta. I already installed the lxc package through apt. Unable to connect to libvirt lxc:///. Failed to connect socket to '/...
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  • 397
8 votes
1 answer
3k views

Nested KVM won't work (guest freezes)

I'm running, as host, Ubuntu 19.10 with kernel 5.3.0-40-generic. In the guest, Ubuntu 18.04.4 with kernel 5.30.0-40-generic. When I launch the Android Emulator from Android Studio, the entire guest ...
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1 vote
2 answers
15k views

Multipass, virt-manager and bridged network

I'm just starting to use Multipass, and I have found that some of the documentation is sparse (or I don't know how to find it properly). I am running 19.10, with QEMU and libvirt installed. I created ...
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1 vote
1 answer
2k views

GPU passthrough: windows guest recognizes GTX 1060 but I can't use it. Passing GTX audio makes VM ultra slow

I'm trying to do GPU passthrough for GTX 1060 on Ryzen 7 2700x. I followed https://mathiashueber.com/windows-virtual-machine-gpu-passthrough-ubuntu/ but I couldn't blacklist the nvidia driver as the ...
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0 votes
0 answers
914 views

port unreachable on pings from guest VM to internet. (KVM Virt-Manager default NAT network)

Using virt-manager, KVM on Ubuntu, I created a VM with default network configuration (NAT) as described here: https://wiki.libvirt.org/page/VirtualNetworking under NAT mode. which should have ...
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1 vote
1 answer
2k views

Is it possible to run qemu-system-x86_64 virtual machine from raw disk image located on external flash drive?

For some project I need to have QEMU/KVM virtual machine with raw disk image. So I have created this raw disk image as simple as dd if=/dev/zero of=~/disk.img bs=1M count=3092 and got 3 Gb of space ...
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1 vote
0 answers
70 views

cloning a .vdi file using virt-clone

I'm trying to clone .vdi file on ubuntu 18.04 using the following command virt-clone --auto-clone -o "/home/simon/VirtualBox VMs/Win7_E5570/Win7_E5570.vdi" -n tmp.vdi and am getting this error ...
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0 votes
1 answer
368 views

Stop meta key activating host desktop in remote sessions

recent windows convert, so apologies if I'm not across a lot of the terminology. I'm using Kubuntu 19.04 on my laptop, which is a mix of personal and work use. When at work, most of my job is done ...
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0 votes
1 answer
3k views

Apparmor permission for libvirt-qemu

I am trying to run custom build qemu with libvirt. However, every time it fails due to apparmor permission. dmesg shows that: [ 82.818348] audit: type=1400 audit(1563507497.685:181): apparmor="...
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1 vote
0 answers
564 views

Move data from qcow2 image to another guest

I have a corrupted guest and I cannot reboot the guest. So I have mounted my guest to my host and this is what I have in /mnt $ sudo ls /mnt bin boot dev etc home initrd.img initrd.img.old lib ...
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  • 111
3 votes
1 answer
5k views

How to share a folder between Ubuntu host and a NAT Windows guest with virt-manager?

I have a Windows 10 guest running under a Ubuntu 18.04 host with Virt-Manager and KVM. It has NAT connectivity because the host is connected through wi-fi, so I can't access my NAS to share files ...
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3 votes
1 answer
5k views

How do I configure DHCP bridge with netplan for KVM on Ubuntu 18.04 LTS?

I recently installed KVM on Ubuntu 18.04 with requisite tools like virt-manager, libvirt, and qemu. My problem is that the VMs I spin up are not connected to internet. Some give me an error message ...
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0 votes
1 answer
690 views

Ubuntu server glusterfs and virt-manager

Trying to install glusterfs on 3 Ubuntu 18.04 servers. Everything works if i add it to fstab and mount the volume. No problem, read, write, delete. And it updates on the server. If i add it to virt-...
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2 answers
595 views

Creating an KVM Virtual Network

I'm new to Ubuntu and I'm a bit confused. I wanted to create a virtual network for one of my virtual machines, so I opened virt-manager and went to edit -> Connection Detail and stopped the default ...
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3 votes
2 answers
4k views

Windows guest's audio choppy in QEMU/KVM with virt-manager

I'm using QEMU with KVM in virt-manager, with a Windows 10 guest. I've noticed the audio to be very choppy, and will cut in and out constantly. After installing most of the virtio drivers for Windows, ...
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0 votes
1 answer
260 views

Pass-through of Marvell 88SE9230 to Xen guest with AMD-V iommu

I have a Gigabyte GA-970A-DS3P board with a AMD FX(tm)-8350 cpu. I have IOMMU enabled in the BIOS. For the non-XEN linux boot I pass iommu=pt amd_iommu_dump as a kernel argument and can verify that ...
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1 vote
0 answers
392 views

Cannot add connection in virt-manager (KVM) in Ubuntu 16.04

I tried to add connection with default settings. I did reboot after installation of virt-manager, VirtualBox works, my account is member of libvrtd group. I'm getting this: Unable to connect to ...
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5 votes
1 answer
13k views

Can't start KVM guest: "network 'default' is not active"

I use Virtual Machine Manager (virt-manager). Host: Ubuntu 18.04. Guest: Windows. After first shutdown I can't start it. I get this error message: Error starting domain: Requested operation is not ...
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1 vote
0 answers
3k views

How can I configure network access to vm instance using virt-manager?

I use QEMU/KVM as virtualization solution and virt-manager UI to configure the VM instances. I share a LAN network behind a Cisco router (192.168.1.1) to which multiple windows machines connect and ...
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2 votes
2 answers
8k views

gpu passthrough problem on adding dumped rom

I'm trying to gpu passthrough with qemu-kvm using virsh on Lubuntu 17.10 I installed Windows 7 (UEFI) and it runs ok but the device driver doesn't install saying Insufficient resource (error 12). ...
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