Ticket #19635 (new defect)

Opened 2 years ago

Last modified 2 years ago

Option "Auto-resize Guest Display" grayed out on Xubuntu/Kubuntu 20.4 Host and Windows 10 Guest

Reported by: openminded Owned by:
Component: guest control Version: VirtualBox 6.1.8
Keywords: Cc:
Guest type: Windows Host type: Linux


Option "Auto-resize Guest Display" is disabled / grayed out. Max. resolution is set to 1920x1200. Guest Add-Ons are installed (most recent ones).

I think problems started when I updated to Kubuntu/Xubuntu 20.04 (not really sure). I was able to reproduce this issue on three (!) machines independently. One with Xubuntu 20.04 and two with Kubuntu 20.04. Different graphics cards as well.

A solution is to set "Graphics Controller" from "VBoxSVGA" to "VBoxVGA" and disable 3D acceleration. Then you have to shut down and restart your VM properly (by OS shutdown functionality).

However, VBoxVGA is not recommended and 3D Acceleration is not available. Should be considered as a bug!

Laptop 1:

Lenovo Thinkpad P1 2nd Gen

Kubuntu 20.04

VirtualBox 6.1.8

NVIDIA Quadro T2000

Switchable graphics are disabled => Intel graphics card not used


Laptop 2:

Lenovo Thinkpad T430

Xubuntu 20.04

VirtualBox 6.1.8

Switchable Graphics active



Laptop 3:

Lenovo Thinkpad T570

Kubuntu 20.04

VirtualBox 6.1.6_Ubuntu r137129

Intel Corporation HD Graphics 620 (rev 02)

Kernel driver

Change History

comment:1 Changed 2 years ago by openminded

Can anyone confirm this issue? Any plans to fix?

comment:2 Changed 2 years ago by pentike

This bug is still present in 6.1.16 r140961 (Qt5.12.8) on Ubuntu 20.04.1 LTS HOST and Win10 GUEST.

Note: See TracTickets for help on using tickets.
ContactPrivacy policyTerms of Use