Questions tagged [virtualization]

Questions about Virtualizing Ubuntu or virtualizing other operating systems within Ubuntu.

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Gnome Desktop is not working after install Xen(20.04)

I install Xen hypervisor using next guide. https://help.ubuntu.com/community/Xen This is my /etc/default/grub. GRUB_DEFAULT="Xen 4.11-amd64" GRUB_TIMEOUT_STYLE=hidden GRUB_TIMEOUT=0 ...
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How to enable offline cpu in qemu?

I am using qemu to run ubuntu16. I met offline cpu. I want to enable it. However, /sys/devices/system/cpu/cpu0 is not found. How to enable it? Thanks very much. ~$lscpu Architecture: x86_64 ...
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1answer
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Unable to boot Raspbian on QEMU

recently I have a problem emulating Raspbian on QEMU for a school project. The teacher provides me a guide, but when I start the qemu emulation appear this error and the emulation stopped. This is the ...
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Troubleshooting KVM's guest anaconda installer logs

I am trying to install RHEL7.9 KVM guest on Ubuntu 18.04 Azure VM. The anaconda installer fails due to some error but the virt-viewer screen got closed so fast, I was unable to read what is the exact ...
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Single GPU passthrough

hey I have some problems with setting up Single GPU Pass through and need some help these are all the codes/ logs I'm getting.. What happens is when I click run on the kvm it goes black screen and ...
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18 views

KVM guest abruptly shutdown

I have created various guest KVM virtual machines (host is Ubuntu 20.10, guests are OEL 7.9, but have had the same behavior with Ubuntu or RedHat guests), and they abruptly shut down without warning ...
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29 views

Wine Can't find StartThreadpoolIo

I tried opening GenshinImpact.exe with wine /media/connor/Shared/'Genshin Impact game'/GenshinImpact.exe and the message it gave me was The procedure entrypoint StartThreadpoolIo could not be located ...
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18 views

KVM guest bridged network not working on ubuntu 20.04

I am trying to setup a guest VM (Centos 6.3) on a ubutnu server 20.04 host. The host is a server connected via a lacp bond. On top of the lacp bond I am running a public bridge to which my VM's can ...
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24 views

GNOME Boxes: How to expose battery to guest OS?

I'm running a couple VMs via GNOME Boxes (libvirt qemu/kvm) on a Dell XPS 13. Unfortunately, these guest operating systems don't seem to understand they are running on notebook hardware, and hence do ...
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Confused about Linux virtual interfaces

I have some misunderstandings about Linux virtual interfaces. I managed to find which interfaces are virtual and physical : ls -l /sys/class/net/ total 0 lrwxrwxrwx 1 root root 0 Sep 30 2020 bond0 ...
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56 views

Is there a way to create an Open vSwitch internal port with netplan?

As per the Title really. I can't work out if there's a way to do this or not. The only mention of ports in the docs are "patch ports" as pairs of ports. The example shows the use of these ...
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Cron Stop in VM when windows lock . How to solve it?

I Use Ubuntu 20 LTS On Oracle virtual box 6.1 . When i start cron some of them stop when my windows lock . I have tryed to not let sleep my VM but even with that when it comes the locking screen form ...
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How to auto grab/release mouse pointer in QEMU/KVM?

I tried VMs in virt-manager (or vfio, I don't know the difference), and I found the auto grab and release function a total bargain. Now I switched to QEMU and I don't have this function (at least not ...
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34 views

How can I host VMs on my Ubuntu Server for remote access within my LAN?

I've read a bunch about KVM, installed it and then successfully create a VM inside it using this guide. Now I would like to be able to access it from my other computers (Windows and Ubuntu) within my ...
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43 views

Network interface goes down when resuming VM

I am using Ubuntu 20.04 Desktop as a VM with VMWare workstation Pro 16 hypervisor, and a Windows 10 laptop host, using NAT network configuration. Sometimes, yet not always, when resuming my VM after ...
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64 views

Why does my Windows 10 installed in a KVM virtual machine, need an installation iso?

I installed Windows 10 inside a KVM Virtual Machine by downloading the Win 2020 iso image from the Microsoft site. The virtual machine worked fine till I moved the Windows iso. Why? What did I do ...
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Installing qemu-virtualized text-only Ubuntu on text-only FreeBSD host

I need to set up an Ubuntu VM on a FreeBSD-12 server which has no X-windows installed (it doesn't need one). The end goal is to run a certain automation script on that VM as a part of a bigger ...
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Sorry, user localguest is not allowed X as root in local-in-sc

I know this is a common question and has been asked a lot, but I cant seem to find a solution that works for me, I work on vm virtual box and I want to install sudo and gtkmm3 library and it just ...
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133 views

modprobe: FATAL: Module ip_vs not found in directory /lib/modules/5.4.0-1036-kvm

When I run command: root@net-node01:~# modprobe ip_vs modprobe: FATAL: Module ip_vs not found in directory /lib/modules/5.4.0-1036-kvm I was install ipvsadm with command: apt install ipvsadm But when ...
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Secure Windows VM in Linux

I have to use a VirtualBox VM with Windows 7, hosted in Ubuntu, running some unsafe software. My question is how do I secure it as much as possible, so it doesn't compromise the Ubuntu hosting machine?...
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92 views

VM with VLAN trunk on KVM

What exactly do I need to configure on Ubuntu18-based QEMU/KVM server to pass a trunk with >1 VLANs to a VM on it? (basically the equivalent of setting VLAN ID to 4095 on a port with ESXi) Some ...
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72 views

Cable connected but no internet access on a virtual machine

I don't know if someone here can help me with this here but I will try. I'm using VirtualBox to try Ubuntu, and everything worked correctly, the first, second and third time I installed it, using the ...
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100 views

The installation of libc6:amd64 on the Jetson Nano / Arm64 removes every ARM64 package on the system

I'm trying to build / Run Android Cuttlefish on PC / jetson nano - ARM64 (running ubuntu 18.04) following this tutorial : How to Build/Run Cuttlefish on PC/ARM64 at some point ,I should do : [on ARM64]...
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Why x86's “INVD” instruction is not supported in KVM?

I understand that incorrect use of INVD instruction will cause the host machine to crash due to memory inconsistency. But what else? Is there any correlation between CPU virtualization and CPU cache ...
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45 views

How can I get OpenGL to work in a virtualized environment? (Ubuntu host/guest)

I've installed Ubuntu Ubuntu 20.04 as a guest on a Ubuntu 20.04 host using QEMU/KVM with Virtio drivers but I cannot get openGL to work, because if I mark openGL, I cannot boot since I only get a ...
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40 views

Please explain the concept behind installing ubuntu as an .img file?

I am trying to understand why the ubuntu server is setup as an .img file within my NAS "/Public” directory. I created a VM on my NAS and installed ubuntu server within the VM. When I installed ...
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63 views

How to use Windows and Ubuntu simultaneously?

I want to use Windows and Ubuntu. I want to be able to boot into both operating systems, but at the same time use a VM to use the other one. Is it possible to do so? What applications do I need and ...
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1answer
24 views

Upgrade form 16.04 to 18.04 libvirt ssh no longer working?

After an upgrade from 16.04 to 18.04 we can no longer ssh into libvirt guests from the host. 'ssh vm-web' just fails silently whereas it worked perfectly before the upgrade. The guests are running as ...
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44 views

Running a VM with old version of Ubuntu, what to use?

I am currently using Ubuntu 20.04, but I still have my old PC with Ubuntu 10.04 installation, and I want to keep it available for occasional use (because there are some things in that version that ...
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16 views

Error editing connection: did not find a connection with UUID '(null)' - Need info to actually fix it!

Seems that there are a few questions on this but I am looking for an explanation and an answer that works. So lets start at the top (I am not very familiar with Linux and its networking morass but ...
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1answer
56 views

Disable Internet connection for Ubuntu VM on Windows-10 Hyper-V

I just installed latest version 20.04 of Ubuntu on Hyper-V of my Windows-10. During setup process I probably chose some setting that enabled the internet access to the VM. Question: How can I now ...
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132 views

Ubuntu 18.04.5 Kernel Update causes Xorg/X11 to crash in Hyper-V VM

first time poster here so I apologize if things are completely formatted etc. I am running on a Windows 10 host machine using a Hyper-V virtualization environment. When setting up the VM I use the ...
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208 views

qemu-system-x86_64: Display 'sdl' is not available

I'm trying to virtualize Android x86 on Ubuntu 20.10 with qemu-android provided by https://www.android-x86.org and I'm following this tutorial : https://www.android-x86.org/releases/releasenote-7-1-r5....
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How to connect to internet from Ubuntu which is installed in a virtual machine using VMWare Workstation?

Today I downloaded VMware Workstation 16 Player and I am running Ubuntu 20.04.2.0 in a virtual machine. My host os is Windows 10 x64. The problem that I have is that I can’t find a way to connect the ...
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1answer
224 views

Help running windows on Ubuntu [closed]

Please I need some guide? I am using Ubuntu 20, but want to run windows virtually on it so I can use some apps that runs only on Windows for now or that i am yetto fully get ysed to on linux. I have ...
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27 views

Unable to enable SRIOV for a Ethernet port [duplicate]

I get a permission denied error when I run the command sudo echo '7' > /sys/class/net/eno99/device/sriov_numfs This is the error: bash: /sys/class/net/eno99/device/sriov_numfs: Permission denied ...
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49 views

Convert Ubuntu Server 20.04 LTS iso to lxc container or download somewhere

Where can I find LXC version of Ubuntu 20.04 LTS? I can find only .iso version at: https://ubuntu.com/download/server Or how can I convert .iso image it to LXC?
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179 views

Need User Name & Password for Ubuntu 20.04.2 LTS | Virtual Machine | Windows 10 Pro

I am unable to guess the username / password requested by Ubuntu running in the virtual machine. I would like to find out what the username / password combination is. I installed Multipass on Windows ...
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20 views

Error message “ubuntu is not installed on this virtual machine Insert the installer disk”

Hi I am trying to install Ubuntu 20 on VMWare, Windows 10. I thought I had installed the ISO, but when running the VM, I get the error message in the title. The choice is between restarting (with same ...
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95 views

wherei need to create /.config/winapps/winapps.conf

Step 3: Creating your WinApps configuration file You will need to create a ~/.config/winapps/winapps.conf configuration file with the following information in it: RDP_USER="MyWindowsUser" ...
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1answer
86 views

No video on Ubuntu 20.04 minimal VM via virt-manager

Environment: Ubuntu 18.04 Server running KVM. Guests managed via Virtual Machine Manager installed on a separate Lubuntu 20.04 machine. All guests running 18.04 up to now, all accessible via SSH and ...
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19 views

How to copy all the necessary patched and working version files of a working qemu / kvm / libvirt configuration from xubuntu 20 to ubuntu 18

I'm trying to emulate windows 10 arm64 on my jetson nano,where I have installed ubuntu 18.04. At the moment ubuntu 18.04 is the only linux distribution supported by nvidia,for this reason I can't ...
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1answer
42 views

Libpulsecommon-11.1.so: cannot open shared object file: installing qemu-virgil on ubuntu 18.04 for arm64

How to fix this ? (on ubuntu 18.04 for arm64 on jetson nano and I can't upgrade ubuntu from 18.04 to 20.04 because nvidia does not support 20.04 at the moment) root@ziomario-desktop:# uname -a Linux ...
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1answer
22 views

Hp 11 Stream Celeron N4000 Virtual Machine PAE error [closed]

Hp 11 Stream Celeron N4000 Oracle Virtual Machine PAE error. I found a non-PAE distro called Mini-OS and it works OK without PAE. I could not imagine that any CPU post Pentium would not have PAE ...
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91 views

What's the difference between ubuntu's amd64-disk-kvm.img and the regular amd64.img cloud images?

On https://cloud-images.ubuntu.com/groovy/current/ there is (among many others) both a groovy-server-cloudimg-amd64-disk-kvm.img and a groovy-server-cloudimg-amd64.img. What's the difference?
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57 views

How to use kde connect with a android qemu vm

I have an android vm.I use qemu along with virgl for hardware acceleration.I had to build qemu from source for sdl and virgl support. I used the following build parameters ./configure --enable-sdl --...
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36 views

Reclaim mouse pointer / return to host with Sosumi & limited keyboard?

I need to use MacOS for a short period and nip back and forth between it and the host OS (Ubuntu 20.04 + i3). I'm using Sosumi, but can't easily get back to the host machine. my laptop is a GPD P2 Max,...
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23 views

Ubuntu 20.04 KVM Virtual Machien Error

I'm trying to install windows 10 on KVM. When I create the machine I get the following error Expanded details are here: I am using Ubuntu 20.04 64 bit.
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186 views

Virtual Machine Manager connection failure

I am trying to create a Virtual Machine using Virtual Machine Manager. I have installed the following packages using the command: sudo apt install -y qemu qemu-kvm libvirt-daemon libvirt-clients ...
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VM internal error

internal error: vendor cannot be 0.' kurulumu tamamlanamıyor. Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in cb_wrapper ...

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