I've installed Ubuntu 64bit on Virtualbox 4.2.16. Guest Additions were installed in Ubuntu as well.
However the display resolution of Ubuntu does not seem to change as the Virtualbox window is resized or if we were to go into Full Screen mode. Any ideas?
I had this problem as well running a newly installed version of VirtualBox (VirtualBox 6.0). I tried installing the aforementioned packages but had no luck. My solution was simpler than I had anticipated. While the machine is powered off, go to:
Settings (of the VM) > Display > Graphics Controller > and select "VBoxVGA"
VirtualBox had set this option to "VMSVGA" by default for me. Fortunately, I noticed this subtle difference when comparing the settings between some of my virtual machines. I hope this works for you as well!
Install the latest version of virtualbox say 4.3.10 or above from here and also it's corresponding guest additions, extensions Or you can also install the latest virtualbox version from the multiverse repository via apt-get. I also faced the same problem in older virtualbox version running Ubuntu 14.04 as guest OS.
To install guest additions, follow this answer.
If that happens once you have the guest additions installed, it may help reconfiguring DKMS
dpkg-reconfigure virtualbox-guest-dkms
It happens to me every time Kernel is upgraded and the above provides the solution.
I tried all of the suggested solutions:
Only after the 4th step the resolution of the guest machine has been fixed. Now it automatically resize to fit the virtual machine window.
I am not sure if the fix was because of changing the graphics controller or all of the above. Anyway, thank you all.
For those who already have the guest extensions and additions , you should go check for additional drivers and install the proprietary video driver for virtualbox , then reset your machine
In addition to ensuring that guest additions is actually installed in the guest machine you should also check the 'Auto-Resize Guest Display' option in the 'View' menu in Virtuablbox (on the host machine).
I have installed and removed Guest Additions multible times (either from 'Devices' menu or from terminal) with no luck. I have noticed that while doing this, i was getting some terminal messages regarding DKMS.
So... i tried to install DKMS separetely and boom! Full screen with high resolution again! So to summarise:
sudo apt-get install virtualbox-guest-dkmsHope it helps.
I know its an old thread, but I recently had the same issue on an Ubuntu host+guest setup and figured I might be able to help someone in my same boat.
I had previously installed Guest Additions via sudo apt install virtualbox-guest-additions-iso, and would get the issue where I can either have resizing without 3D acceleration through VBoxVGA, or 3D acceleration with no resizing with VMSVGA (and no imcompatible settings message).
I uninstalled the additions with sudo apt remove virtualbox-guest-additions-iso && sudo apt autoremove, then rebooted. I then installed Guest Additions the intended way, by inserting the ISO and installing the .run file, and viola, I now have auto resizing display with VMSVGA and 3D acceleration.
I tried so many things and as someone's hint to the SMVGA'S drivers root rights driver in a folder VBoxClient I did not have I just...
...ran the app out of terminal with sudo...
...leading to the demand for a boot from CD which I aborted. But then after starting again regularily from menue the rezising works well although the VMbox's window frame showing strange behavior. But I do not care since it autofits. Winn8.1 in VBox7, Gnome43.2 Wayland, ArchLinux6, Intel® Core™ i7-8650U × 8.
Change the Graphics Controller of the virtual machine to VBoxSVGA. VirtualBox will warn you that invalid settings are detected. Ignore this message. This trick worked for me. I installed Bodhi Linux on VirtualBox.
I've tried most of the above answers, but what worked for me was going into settings > User Interface, then changing the Visual State dropdown from "Scaled" to "Normal (window)".
I had a window resizing issue on VirtualBox 7.0, Ubuntu 22.04 LTS.
Issue turned out to be the new Wayland display server protocol. It basically doesn't work with VirtualBox.
VirtualBox is tracking the issue here, but there's unlikely to be a fix anytime soon since it has to do with how Wayland handles memory.
Related StackExchange issue is here, you can use these instructions to switch back to X11.org from Wayland.
For me it was:
sudo apt-get install virtualbox-guest-dkmssudo ./media/<user>/VBox_GAs_7.0.20/autorun.shView -> <virtual_screen_name> -> Scale to 200% (autoscaled output)It worked for me with Ubuntu 22 as both host and guest and version 7.0.20 of VB.
My guest machine was Windows, but since the problem turned out to be with VirtualBox (6.1), this may still be relevant.
Even though I had the following:
VBoxSVGA… it still didn't work for me. I wasn't even able to select any of the standard screen sizes for my virtual screen.
The solution I found was to shut down my VM, quit the VirtualBox Manager, and type the following from the command line:
VBoxManage setextradata "Windows 10" GUI/LastGuestSizeHint 3840,2160
You'll need to replace 'Windows 10' with the name of your virtual machine, and the last parameter should match the resolution of your monitor.
I was running VirtualBox under Linux, but it seems there's such a thing as VBoxManage.exe for Windows, so it should exist for you. You may need to escape the spaces differently in DOS, though, and maybe the slash as well… it's been a long time since I've dealt with DOS.
