Questions tagged [virtualbox]

VirtualBox is a platform-independent open-source virtualization software available for Linux, OS X, Solaris and Windows hosts. Guest additions need to be installed to automatically adjust the guest screen resolution. USB is supported through a proprietary extension.

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4answers
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SSH into Ubuntu VM remotely

I dont have much experience on networking or Linux, but I'm trying to ssh into an Ubuntu virtual machine from outside my home network. The Ubuntu virtual machine (VirtualBox) is running on a Debian ...
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1answer
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How do I make 1920x1080 screen resolution permanent? Lubuntu 20.04 Virtualbox Windows host

I found this: xrandr --newmode "1920x1080" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync xrandr --addmode Virtual1 1920x1080 xrandr --output Virtual1 --mode 1920x1080 Gets ...
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4answers
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VirtualBox shared folders are owned by root in Lubuntu guest

My Setup is as follows - Host: Ubuntu Server 14.04 Guest: Lubuntu Desktop 15.10 I have shared dirs on host to guest with automount option, and the directories show up in Guest OS's just fine - /...
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0answers
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Running Virtualbox 6.1.22 on Ubunti 21.04, I get 'Effective UID is not root' every time it try to start a VM

I'm running Ubuntu 21.04 with the default Virtualbox that comes with Ubuntu. VirtualBox Graphical User Interface Version 6.1.22_Ubuntu r144080 . It starts up fine, but when I try to start a VM, I get: ...
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1answer
18 views

Unable to install Guest additions in VBox 6.1

Linux newbie here. Host OS is Ubuntu 21.04. I want the Guest OS to be Kubuntu 21.04 but when I try to install Kubuntu into VBox, the screen is chopped off and I can’t resize it to see all the buttons ...
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0answers
13 views

Cannot enable second monitor on virtualbox

I'm trying to set a second monitor on a windows host, ubuntu 20.04 virtual machine, the second monitor is created but I cannot enable it its always disabled nad in the ubuntu host there is no second ...
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1answer
13k views

SSH: Port 22 Connection refused

From Ubuntu 18 lts I'm trying to establish ssh connection with my Kali Linux VirtualBox on the same computer. I've already installed openssh-client and openssh-server on both systems and I'm connected ...
1
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1answer
39 views

How do I write to solve the shared folder permission denied Lubuntu 20.04 to Windows 10 [duplicate]

I find many solutions but I don't know enough Linux to understand what to write specifically for my own machine. That is why I wrote the question so specifically because I don't know how to write in ...
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27answers
777k views

Higher screen resolution in VirtualBox?

I've just installed Ubuntu 10.04 into VirtualBox on Windows 7. Unfortunately the only options showing for screen resolution are 640x480 and 800x600 and the monitor is showing as 'Unknown'. How ...
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1answer
35 views

I wanted to try Lubuntu but can't install guest additions

I get this error "can't find guest additions try installing them manually." Manually? What does that mean? Why can't it find the guest addition it's right there in the optical drive. I see ...
3
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1answer
5k views

VirtualBox machine window is suddenly very small

I am running Ubuntu 16.04, and have an Ubuntu 16.04 VM running in VirtualBox. Today when I started up VirtualBox and started the VM, it didnt resize to fit my display. Instead it is stuck at 800x600, ...
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9answers
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VirtualBox - how to increase video memory?

I have just installed Ubuntu 14.04 on VirtualBox, including the guest additions. However, the display is really slow. Looking at the display settings I can see that the video memory is only 12MB but ...
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0answers
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Unable to resize my hardrive in Ubuntu [duplicate]

I am using virtual box and my Host Device is : Windows 10 Guest Device is : Ubuntu 21.04 I am new to Ubuntu and i have recently installed oracle virtualbox and used Ubuntu as my guest device. At the ...
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4answers
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VirtualBox error: Kernel driver not installed (rc=-1908) (running ubuntu 20.04 on my chromebook)

When I try to start a virtual machine in VirtualBox, I get the error above. I tried what it asked me to do, but it didn't work. My kernel version is 4.4.232. Also, here is the error message: The ...
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2answers
3k views

Genymotion does not show window, fails with error 1003

I can't figure out why the Genymotion window doesn't show up on my Kali Linux. When I start the same image using VirtualBox it starts up but when I start using Genymotion, the emulator window shows ...
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1answer
35 views

install ubuntu on VM

Hello I was trying to install ubuntu on my VM and when I got to the installation type I saw that everyone choose "erase disk and install ubuntu" but I wasn't sure what it is going to erase, ...
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1answer
47 views

Ubuntu VirtualBox VM does not accept input after logging in

After successfully installing VBox Guest Additions, I can now change the screen resolution to whatever I like. Unfortunately, I now have another issue. I can't type anything, I think it is not ...
0
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0answers
9 views

Virtual Machine Middle Mouse Click

I have tried searching and cannot find a definitive answer. The base problem is that when running ubuntu on a virtual machine, I cannot find a way to get the middle mouse button to work while using a ...
1
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1answer
79 views

Audio crackles when I run VirtualBox

Recently I'm having an issue for which audio crackles when I run VirtualBox in Ubuntu 20.04. If I then execute pulseaudio -k it does fix it (upon restarting programs), but still this workaround is not ...
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0answers
38 views

VirtualBox VM black screen after disk resize

My VM was running out of space (I use Virtualbox) thats why I decided to inrease the storage size resize So I resized it using this screen but after that I couldn't fully boot up my VM again. What ...
2
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0answers
42 views

Segmentation fault while installing ubuntu-20.04.2.0-desktop-amd64.iso

While installing ubuntu-20.04.2.0-desktop-amd64.iso in Oracle VirtualBox, got the below error, I have 140GB free disk memory in my laptop. Why is this error coming often, tried installing multiple ...
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0answers
15 views

Run vagrant up with VirtualBox gives “VirtualBox is complaining that the installation is incomplete” in GitHub Codespaces

I am trying to spin up a vagrant VM to use as the working environment. When I try to spin up the machine, it keeps throwing me the error: The provider 'virtualbox' that was requested to back the ...
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0answers
16 views

Ubuntu PXE Setup On Virtual VM hosted in Virtual Box

I am trying to install a PXE setup in Oracle VM manager VM in ubuntu 20.4 Focal, but am facing two issues generally: The Copy Paste does not work in Ubuntu, so I'm unable to copy the yaml file Unable ...
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1answer
35 views

Ubuntu no longer works after VirtualBox update

I just updated my VirutalBox to the latest software, and since then I cannot get Ubuntu to load. It black screens on the login screen. I've tried several fixes other forums have mentioned such as the ...
3
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1answer
3k views

No audio in Ubuntu 16.04 LTS with VirtualBox 5.0.20

I have been breaking my head on this for a day and a half now. I am running VirtualBox 5.0.20 r106931 in Windows 8.1. My Guest system is Lubuntu 16.04 LTS, and I have successfully installed the ...
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3answers
1k views

VM Ubuntu: What are /dev/mapper and /dev/sd1?

I want to increase the free disk space of my VM Ubuntu (host = Mac 10.10). After autoclean -> auto remove, I still 80% (=5.7/7.5 GB)of space used in /dev/mapper, however, only 3% (=7.2/246.8 MB) used ...
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2answers
35 views

configuring two network interfaces on ubuntu 20.04

First a bit of background on the problem, I'm trying to create a dynamic malware analysis lab so I'm running inetsim on this ubuntu vm and I have a couple of other vm's on the internal network ...
3
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1answer
192 views

How to convert a large dynamic virtualbox VDI image to a small image file to write it into a USB drive as a portable installation?

I have a VirtualBox dynamic image of Xubuntu 20.04 of maximum size 70 GB. The current size of the image is 9 GB. When I try to convert it to a .img file with the command VBoxManage clonehd 'xubuntu....
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0answers
18 views

Serial connection between 2 guest virtual box VMs using vagrant

I am currently testing the kernel inside the Master VM(Virtual Box) and I am looking for a way to establish a serial connection in order to redirect the dmesgs between the Master and the Slave(which ...
0
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1answer
24 views

Apache2 - .app virtual hosting error

I am trying to host a xyz.app URL on Apache. I've configured everything on my server, but I am not even receiving anything on access.log. On the same server, I am already hosting .com website which is ...
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0answers
16 views

Black screen problem while using ubuntu on virtual box

I have been using ubuntu on a virtual box for a few months now. I wanted to increase the hard disk size for my virtual machine. So I changed it from 50 Gb to 130 Gb inside the Virtual Media Manager. ...
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0answers
32 views

How can I access the Internet from VirtualBox via mobile hotspot?

First up, let me clarify that I have gone through similar questions on the forum, but none appeared to address my problem. (I must confess, however, that not being familiar with the technical language ...
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0answers
31 views

/dev/input/mouse0: is not an evdev device

I have been trying to set up a QEMU + KVM configuration to run a couple of VMs on Ubuntu as the host. I even have been able to passthrough a GPU successfully to the guests. However, there seems to be ...
2
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2answers
3k views

I am getting the same error everytime I try to boot Ubuntu on VirtualBox

Every time I try to run Ubuntu, this error comes up. "Failed to open a session for the virtual machine Linux. The virtual machine 'Linux' has terminated unexpectedly during startup with exit code 1 (...
27
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5answers
58k views

“FATAL: Module vboxdrv not found in directory /lib/modules/4.10.0-20-generic”

Running the sudo sh vboxsign.sh and getting "FATAL: Module vboxdrv not found in directory /lib/modules/4.10.0-20-generic" What am I missing? This ran fine last time, but I've since upgraded, and must ...
3
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2answers
3k views

Virtual machine running painfully slow

I am running Ubuntu 14.04, and I've installed windows 8 on virtualbox. The problem is that it is too slow - even minimizing a windows takes 2-3 seconds. The reason I think this is a problem is ...
2
votes
1answer
97 views

Unable to use a shared folder in VBox Ubuntu guest that was upgraded from 20.10 to 21.04

The host machine is Ubuntu 20.10 Desktop with VirtualBox version 6.1.16. The guest machine was also Ubuntu 20.10 Desktop with the latest (6.1.16) VB Guest Additions. I was able to use shared folders (...
0
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0answers
15 views

Internet connection suddenly down? Ubuntu 20.04 LTS

appreciate if anyone could help me. I install VMware workstation and oracle virtual box last week with each having the same ubuntu 20.04 LTS VM in it. It work well with internet connection via NAT (I ...
3
votes
2answers
6k views

Virtualbox cannot create .COM object

After a rebooting of Ubuntu 16.04, I can no longer launch VirtualBox. It errors out with the following error message: Failed to create the VirtualBoxClient COM object. The application will now ...
0
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0answers
40 views

How do I make Ubuntu Linux full screen in Oracle Virtual Machine

I have installed Ubuntu in a virtual machine by following this article. I called the VM "myLinux", I succeeded to install it, but linux is not in full screen. I made some searches and tried ...
2
votes
1answer
620 views

how to quit sshuttle and get system networking back to normal in VBox

I love sshuttle. My new fav toy. But...when i run from the command line and I use ctl-c to quit....my networking is screwed and I have to restart the VM. Using 12.04 Here is how i start from the ...
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0answers
19 views

How can I understand why an app is draining computer resources?

I’ve being using a VirtualBox Ubuntu 18.04 VM on a a MacBook Pro (MacOS Big Sur - 11.4) without any perfomance problem. Lately I’ve installed an application (Rabix composer), which gave me no problem ...
27
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14answers
222k views

Virtualbox, How do I change guest (precise) resolution to 16:9 (1920x1080) instead of default 4:3?

There are many questions about resolution issues on askubuntu but no question/solution seems to solve my issue. I've a 12.04/precise host system and installed Ubuntu 12.04/precise as guest system as ...
0
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0answers
21 views

ubuntu 20.04 does not start up properly in virtual box

Virtual Box is the latest version. I have windows 10. I setup ubuntu 64-bit and make everything as recommended, RAM, memory allocation. When I install ubuntu, the screen shows up, but no application. ...
6
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7answers
7k views

Mouse suddenly stops working in Ubuntu (running as guest in VirtualBox)

Sometimes in Ubuntu (running as Xubuntu as guest in a VirtualBox on a Windows as host) the mouse stops working in the sense that mouse clicks are not recognized anymore. The mouse pointer is still ...
0
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1answer
24 views

Ubuntu 20.04.2 on Virtual Box (Mac) - Flashing white screen, but no XOrg option

I recently installed Virtual Box running Ubunto. I'm on Mac, running the latest OS. However, once I log in, my screen flashes white, especially when I move the mouse cursor around. From Googling, it ...
0
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0answers
14 views

VirtualBox: Black blinking screen after detaching and re-attaching the VDI

I've been trying to solve a disk space issue, and one thing I did was detach my disk from within Virtual box settings, I then tried to re-attach the same vdi file but now when I boot the machine it ...
1
vote
2answers
4k views

Virtualbox Ubuntu 16 guest, slow UI and animations

I'm running Ubuntu 16.04 in Virtualbox. Asides from some slowness it's working fine, except for the User interface being very slow. For example, window animations do not happen, windows just pop up, ...
0
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0answers
67 views

How do I install Ubuntu over OpenFoam?

For university we needed to install Ubuntu over OpenFoam and now have to do some tasks. But I do not understand anything! --> We need to solve the "lid-driven cavity flow" tutorial: ...
0
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1answer
35 views

How to enable copy-and-paste of a Ubuntu VirtualMachine running on MacOS host?

I am running a VirtualMachine (6.0.14) on MacOS 14.10.6, with Ubuntu 20.04 installed in the VM. I think I have installed the Guest Additions, and under Settings -> General -> Advanced I did ...

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