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Questions tagged [virtual-machine]

A virtual machine (VM) is a guest Operating System running in a completely isolated environment within a normal host operating system. Modern virtual machines are implemented with either software emulation or hardware virtualization or (in most cases) both together.

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GUI window stuck after virtual machine killed

I use VirtualBox to run a number of background VMs, using the "Detachable Start" mode and then using "Show" to attach a GUI on the occasions when I need one. In this instance, the VM was in trouble, ...
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1answer
22 views

Virtualbox: Using existing .vdi to create new machine to access old data?

I backed up my .vdi files of some Ubuntu VMs and wanted to restore to a new computer. I thought that by using existing vdi files, I would be able to create a new VM or import it somehow to recreate ...
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1answer
21 views

How does the BIOS work in a Xen virtualized environment?

On a physical machine, the BIOS is located on a chip that sits on the motherboard. How does with work in a Xen virtual environment? Any links to documentation/articles will be appreciated.
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How do I create Ubuntu template on Qubes OS? [closed]

I want Qubes OS to create Ubuntu VM in the environment. I saw this site https://www.qubes-os.org/doc/qubes-iso-building/, "Build Environment" is all done. But I do not know what to do from there.
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1answer
23 views

Ubuntu Virtual Machine File Sharing — Mounting

I am running Windows 10 as my host OS, using Oracle VM VirtualBox Manager 6.0.8 as my virtual machine software, and Ubuntu 18.04.2 is my guest OS. I am trying to set up folder and file sharing. I ...
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15 views

Hosting LXC Linux containers in Azure

We have a number of LXC Linux containers running on a linux host in data center. I was asked to explore feasibility of moving these containers to Azure as part of cloud migration strategy, but I am ...
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1answer
11 views

Running a different configuration.nix file into a virtual machine from a non-nixos operating system

In the amazing nixos, it is possible to launch a lightweight container that will run a system whose configuration.nix file is different from the host configuration by using: nixos-rebuild build-vm -I ...
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1answer
29 views

What is better to install to virtualization on ubuntu? [closed]

i have home server and i want virtualize all my hosts (web,radio, tracker, file server etc) to use more then one OS. So for host OS i want install Ubuntu-server on HDD 500gbx2 Raid 1. i want to ...
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21 views

Configure XFCE in Debian etch (4.0)

i am currently installing Debian Etch as a Virtual Machine with Virtual Box (the host is a windows 10). I used an iso (from debian website) to install it, but it seems that no desktop environment was ...
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2answers
37 views

delayed bash script execution after boot

My Fedora Linux (presently 30) system hosts several virtual machines (VMs) configured to start up when host system boots. These are isolated servers supposed to be visible from the internet containing ...
1
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1answer
19 views

Creating virtual Audio device

There is a Linux (Manjaro) PC without an audiocard. Is it possible to create a virtual audio device? The usage idea is the following: virtual audio device process a sound, then there is a server ...
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1answer
13 views

Top command output for Virtual or Physical Machine

Does top output display information particular to the VM I am in, or the entire physical machine? top - 17:22:04 up 22:37, 1 user, load average: 72.55, 73.18, 66.84 Tasks: 140 total, 1 running, ...
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1answer
104 views

How to install Guest Additions with a Oracle Gnu/Linux guest on VirtualBox?

I have a Linux virtual box and want to install Guest Additions. I've successfully mounted the iso. But now what...? How can I access the mounted cd-rom in the terminal of the virtual machine as to ...
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1answer
16 views

RHEL KVM stuck when trying to create VM under VMware Fusion

I am trying to use KVM on RHEL 7 VM but after I try to create a new VM it goes well until I click Finish button, at that moment the window stuck and does not respond anymore, so I can't create a VM! ...
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1answer
17 views

How can I get the windows installation in a virtualbox in ubuntu host to have full resolution as the original monitor?

I've installed virtualbox with the following command $ apt install virtualbox Then I installed Windows 7 in the virtualbox. But I notice that even though there are very high resolution options in ...
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0answers
30 views

Failed to create pipeline: no element “autoaudiosink”

I have windows 10 vm running on kvm on an Arch Linux installation. When I run view it with virt-viewer and I try to watch youtube in a browser, it shuts virt-viewer down with the error: GSpice-...
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0answers
27 views

How to start X server in Debian Wheezy mips running on qemu?

I created a debian mips virtual machine by downloading qcow2 images from here. I then started the virtual machine by qemu-system-mips \ -m 256 \ -M malta \ -kernel vmlinux-3.2.0-4-4kc-malta \ -hda ...
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2answers
33 views

Can't install windows guest on virt-manager

I can't seem get a windows guest installed on virt-manager. When I start the machine before the install cd loads I get a blue screen with code SYSTEM THREAD EXCEPTION NOT HANDLED. Here's the logfile ...
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0answers
13 views

CentOS 7 KVM host with two bridges

I currently have a CentOS 7 host with a single NIC and would like to be able to use this NIC for two different types of bridges. The host (CentOS) machine currently is currently pulling DHCP from my ...
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0answers
16 views

Bluetooth Speaker not recognized via USB

I want to update the firmware of my Anker Soundcore 2 Bluetooth speaker. The required software can be downloaded from: https://www.anker.com/update-firmware As the software is not available for Linux,...
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0answers
25 views

yocto Xen-Guest-Image-Minimal filesystem setup question

I have used poky/yocto project to create a xen-guest-image-minimal for Xen 4.9.0 (Ubuntu Server 18.04) running on a Xeon i586 processor. I am now preparing to create config file for the guest... and ...
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24 views

Installing hypervisor or emulator on OpenSolaris

what are the best options for installing hypervisor or emulator for an enterprise solution virtualization use on OpenSolaris?
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0answers
24 views

Possible limiting factor during upgrade of Fedora VM - not disk or cpu or network? [duplicate]

I'm upgrading a VM from Fedora 29 to Fedora 30. I triggered the update from inside GNOME Software. It downloaded the upgrade, and asked to reboot. It started installing... atop shows the qemu ...
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2answers
106 views

Virtual Machine Linux OS

I have a few Linux virtual machines running on this computer, and if I look at cat /proc/cpuinfo It is able to tell me the model name for the host system. Will this affect the performance of the "...
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1answer
49 views

Trying to SSH to remote server from VM Ubuntu

I need to ssh into a remote server. I set up a fresh Ubuntu install in VirtualBox for that purpose. First of all I generated my public key: ssh-keygen -b -4096 Then tried to ssh: ssh remote_user@...
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0answers
45 views

qemu-system-x86 --enable-kvm Windows 2k12 R2 stuck at windows logo

I am having an issue with kvm-qemu. Host: Ubuntu Guest OS is win2k12 R2. When the VM is booted, some times it get stuck at windows log or it pass the windows log & get stuck at a black screen. I ...
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2answers
43 views

virsh preboot script

I am running a virtual machine that requires vfio access to a PCI card. Using this script I am able to successfully bind the PCI device and its iommu group to vfio-pci, which then lets me boot up the ...
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0answers
35 views

What virtualization platform does provide dynamic memory allocation?

I need a virtualization platform for Linux host that supports Dynamic Memory Allocation. By Dynamic Memory Allocation I don't mean Memory Ballooning where we can request memory from a running VM (...
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0answers
137 views

How to route traffic through VPN only accessible within VM (without a bridged adapter)?

I have an interesting situation where I have a corporate VPN that can only connect through a specific (outdated) version of Ubuntu (and/or Windows) using a vendor-supplied client that creates a VPN ...
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0answers
14 views

Booting Android-x86 thru KVM while on a Pendrive-installed Debian 9

short version: Tried running KVM on a pendrive-installed Debian 9. All attempts result in the virtual machine running slowly if at all. long version: I'm currently running a pendrive-installed ...
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0answers
26 views

“Disk I/O error” when trying to run OS via QEMU on Pi

I am trying to run Windows 98 on QEMU on my Pi using a project I found here: https://www.hackster.io/314reactor/windows-98-wrist-watch-15ecfd . When I run qemu-system-i386 -localtime -cpu 486 -m 96 -...
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1answer
66 views

Is there something which a container can't be used for while a Linux virtual machine can?

When would you choose to use a Linux virtual machine instead of a docker container? Is there something which a docker container can't be used for while a Linux virtual machine can? Is it correct ...
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1answer
66 views

Is chroot an example of application virtualization in Linux?

I am not very certain about the concept of Application/Process Virtualization. To help with that, what are some examples of application virtualization in Linux? (https://en.wikipedia.org/wiki/...
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4answers
264 views

Lightweight desktop environments to replace GNOME for CentOS?

For a project I need to write and execute Ansible scripts in a Linux environment (CentOS). Though using the command line and vi is interesting, I need to use graphical file explorer and Visual ...
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1answer
37 views

Virt-viewer fullscreen with 2 monitors in dwm or i3

Is there a way to start virt-viewer -f domain in DWM or i3 so it automatically fills all (2 of) my monitors as it does in gnome? When I try now virt-viewer open both screens on 1 monitor on top of ...
2
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1answer
572 views

VirtualBox Error : Kernel Driver not installed(rc=-1908)

I am currently using Ubuntu 18.04 and VirtualBox GUI Version 5.2.18 and I faced the following bug: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver (vboxdrv) is either ...
4
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1answer
63 views

Virtualbox: install a x64 Windows OS from Ubuntu?

I was thinking about making a Virtual Machine, but the description of VirtualBox from the Software installer say: VirtualBox is a free x86 virtualization solution allowing a wide range of x86 ...
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1answer
39 views

Can the virtual machines created by Docker be used in a standalone way without Docker?

Docker can creat virtual machines to be used as nodes in swarms. Can the virtual machines created by Docker be used in a standalone way without Docker, or are they only usable by Docker? For ...
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1answer
80 views

Does Docker work with VirtualBox but not with KVM/QEMU?

Docker can creat virtual machines to be used as nodes in swarms. The machine drivers contains VirualBox but no KVM/QEMU. Does it mean that virtual machines created by KVM/QEMU can't be used as ...
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0answers
31 views

How can I use multiple mounted folders in KVM?

I have a KVM-guest, where 5 folders should be also accessible on the host machine under a single folder. How can I do that with a single mount point? The folders on the vm are: /var/log/apache2 /var/...
2
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0answers
46 views

Compress VirtualBox Linux Virtual Machine

I am trying to create a VirtualBox linux virtual machine on which I want to mainly run Wine to install a windows application. I managed to install Lubuntu 18.04.2, since it is the lightest Ubuntu ...
0
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1answer
86 views

ssh asking for a password but not accepting it

I'm trying to scp through a virtual machine but when the guest terminal asks for my host user password it simply does not accept my real user password. Is the machine asking for another entry? The ...
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2answers
37 views

Change CPU count on live Linux VM

Is it possible to change the number of VCPUs on a KVM virtual machine on Linux without stopping it first? The Linux kernel has calls for addition and removal of CPUs (CPU hotplug in the Kernel) for ...
0
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1answer
112 views

Cursor jumps to left corner (windows 10 vm - kvm)

So I have a Windows 10 VM running on Arch Linux and it is working fine with 1 Display. When I add the second video tag with virsh edit VM-name, and get the two displays, the mouse starts moving around ...
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1answer
129 views

How do I shut down detected virtual machines on Mac OS?

I haven't used VirtualBox probably since 2016 and today I dusted it off and of course I needed to install an updated version, but I soon got this message: The installer has detected running virtual ...
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0answers
33 views

1 NFC Device found but won't list it

I am running a VM of Kali Linux. I have an ACR122U NFC Card Reader. One problem I have been having is that when I attach the NFC reader to my PC and run nfc-scan-device -v, it returns "1 NFC device ...
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1answer
95 views

Qubes-OS transfer files from and to HVM

I can't find in the documentation how to transfer data from and to the HVM in Qubes-OS. When a normal AppVM is created, it has the Qubes Tools installed so easy copy and paste, and transferring files ...
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0answers
129 views

Xrandr increase resolution black screen

When I try to increase the resolution in my virtual machine (Xen), running a debian distribution (Kali/Parrot in this case), I get a black screen. I use xrandr, because in the GUI, the max resolution ...
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0answers
125 views

Qubes-OS install Qubes support tools in HVM to fix screen resolution and copy paste

I want to install a fully virtualized machine (HVM) with Kali Linux in Qubes-OS. The installation itself was a bit bumpy but I managed to install it correctly. Now, the issue is that I want to ...
0
votes
0answers
31 views

Unable to uncapture the mouse pointer in QEMU KVM on CentOS 7

I am unable to see the mouse pointer on the console while on KVM Virtualization. I have tried the Ctrl-L+Alt-L but that does not work.