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Questions tagged [virt-manager]

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

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13 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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0answers
22 views

Slow KVM after moving from 20.04 to 21.04

I use a lot of KVM through virt-manager. On 20.04 it worked ok, but on 21.04 the VMs are kinda slow, specially the UI. Is there some known problem around this? I'm on a XPS 13 32gb RAM i7 11th gen ...
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0answers
22 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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0answers
20 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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1answer
23 views

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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1answer
87 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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0answers
81 views

kvm virt-manager adding a device usb-wacom-tablet evdev

I am trying to use a wacom graphire2 in windows10 guest trough virt-manager 3.0 in a ubuntu 20.04 with qemu5 (also tried qemu4.2) in a gpu passthrough environment. Wacom works perfectly with usb ...
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0answers
19 views

Network Connection between devices in Virtual Manager

[ubuntu 20.04.2 LTS] I have installed virt-manager onto this system and created two client machines fedora and centos as the web server. currently I am testing out apache2 with docker installed. The ...
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0answers
205 views

KVM/QEMU display resolution

I use Ubuntu 20.04 as host and as guest. My host allows a display resolution of 2560x1440 for example. Now I run a VM with virt-manager. Within the VM I try to change the resolution. In the settings I ...
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1answer
142 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:...
1
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1answer
794 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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2answers
158 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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0answers
49 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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0answers
119 views

Install virt-manager 3.2

When installing virt-manager using apt-get, the 1.5.1 version gets installed. How can I easily install a newer one?
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0answers
178 views

KVM/qemu/virt-manager: Failed to Save Virtual Machine while Shared Folder Mapped in lInux Guest

Ubuntu host: 5.4.0-51-generic #56-Ubuntu SMP Mon Oct 5 14:28:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux I try to save my paused Debian Guest VM, using virt-manager 2.2.1 and I get the following error: ...
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1answer
692 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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0answers
321 views

Struggling to get USB redirect and shared folders working with MacOS guest on Ubuntu host with QEMU/KVM

I've succesfully created a MacOS guest on my Linux host using this tutorial: New and Improved Mac OS Tutorial, Part 1 (The Basics) I can get it started via the command line using the ./basic.sh file ...
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0answers
2k views

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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0answers
78 views

Converge storage for LXC containers between LXD and virt-manager?

Problem: Many different systems for containers and VMs - some very similar, some even using the same backend, but storage all in different places LXC w/ LXD = /var/lib/lxd/storage-pools LXC w/ virt-...
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0answers
90 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....
1
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1answer
615 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 ...
1
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1answer
174 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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0answers
662 views

Create bridge network for virt-manager VM to get DHCP IP from router

I am using virt-manager for managing qemu VM but I need to create a new bridge network with my WIFI adapter (wlp2s0) such that my VM can get the IP address directly from my router and not via NAT. My ...
2
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1answer
2k 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 '/...
8
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1answer
2k 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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2answers
9k 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 ...
1
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1answer
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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0answers
540 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 ...
0
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1answer
1k 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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0answers
41 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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0answers
17 views

Virtual Machine Manager on Ubuntu Desktop stuck at v1.5.1 [duplicate]

Running Ubuntu 18.04.3 Desktop, Virtual Machine Manager (virt-manager) seems to be stuck at v1.5.1. I've added the universe repo and tried the cli 'apt-get install virt-manager' The current version ...
0
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1answer
183 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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1answer
2k 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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0answers
390 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 ...
3
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1answer
3k 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 ...
3
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1answer
4k 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 ...
0
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1answer
528 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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2answers
505 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 ...
3
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1answer
2k 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, ...
0
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1answer
223 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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0answers
328 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 ...
2
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1answer
4k 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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0answers
2k 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 ...
1
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2answers
5k 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). ...
0
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1answer
159 views

Virtual machines lost internet after physical host upgrade

I have a home server setup where Ubuntu 16.04 hosts a couple of Ubuntu server virtual machines. Everything ran smoothly for half a year until this week I installed the updates to the physical machine ...
5
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1answer
27k views

How to share folder with Windows 10 guest using virt-manager (KVM)?

These instructions for sharing host files with a guest are not working because there is no /usr/bin/qemu-kvm.
0
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1answer
515 views

how to expose cpu flag with virt-manager

I want to know if there is a way to expose some cpu flag (mssse3 , mssse4.1) using Virt-Manager for my KVMs. Thanks
1
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0answers
198 views

Ubuntu host is unable to lock screen if a VM (virt-viewer/KVM) has input focus

I run Ubuntu 16.04 and some QEmu/KVM virtual machines with virt-manager. Whenever one of my VMs has input focus and I leave my computer alone for enough time to trigger the host's automatic screen ...
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0answers
812 views

KVM, virt manager and Windows for usb camera setup

I have a bit of the same issue as this : QEMU/KVM/Virt-Manager: Passthrough of USB Webcam to Windows 7 Enterprise creates "NEC USB HUB", one-two year(s) later. I tried 2 cameras for a ...
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0answers
690 views

PCI-Passthrough KVM/QEMU

I want to leave discrete GPU(GTX 950) for host PC and integrated GPU(HD 530 Skylake) for guest PC. Is that possible to passthrough integrated GPU? ...or I must passthrough discrete one? Hardware: ...