MY EXPERIMENTS VirtualBox Guest Additions from openSUSE repositories Guests that have not gotten the update seem to be working fine. I applied guest additions to several hosts before discovering this issue, including Centos-6, Centos-7, Centos-8, kali linux, and OracleLinux-8. Looked around on the world wide web and found that the VirtualBox bug tracker has Ticket #19496 already open for the same issue: The virtualbox 6.1.6 update seems to be okay, but if the matching guest additions is applied to the guest, the auto-resize or resize to any resolution is unavailable. However, before blaming it, I wanted to understand the root cause of the problem. My experience with openSUSE Tumbleweed as a VirtualBox guest has always been good. The Display utility in KDE Plasma 5 lets me change the resolution and it works for a couple of seconds and reverts to 800圆00.

The only issue is that the resolution is 800圆00. Got the latest openSUSE Tumbleweed Network Image - openSUSE-Tumbleweed-NET-x86_64-Snapshot20200509-Media.iso. When the VM is off, go to the VM settings and make sure to have in the ‘Screen’ section the video memory at maximum (usually 128Mb) moreover the 2D and 3D video acceleration tick must be empty.The plan was to install openSUSE Tumbleweed as a VirtualBox guest in an openSUSE Leap 15.1 host with VirtualBox version 6.0.18_SUSE r136238 installed in it. NOTE: as an alternative to the Additions command it is possible to ‘mount’ the additions disk on the VM directly from the Virtualbox tools menu a window will appear on the screen asking if you want to install the addons, you have to click on yes and reboot. The resolution should now change automatically, but if it doesn’t, just go to the control panel and screen settings: the dropdown will now be enabled. Install the VirtualBox Guest Additions apt-get install virtualbox-guest-dkms To change the displayed resolution at will, proceed as follows: You will have also noticed that going on the screen settings it is not possible to change this resolution from the dropdown. If you have installed Ubuntu Linux in a virtual machine on VirtualBox you will surely realize that by default its resolution is set to 640×480, very poor for any type of use.

Windows 11 virtualbox screen resolution