No Full Screen Mode and Resize Screen

[kiekar]

Hello,

Did a clean install with all upgrades for Ubuntu Live Server 22.04.3 on a windows 11 host using VirtualBox 7.0.12. I also installed the gcc and make perl dkms package for guest additions.

With guest additions installed I'm not able to change to full screen mode or select a screen size using View > Virtual Screen 1. It always defaults to 800x600.

Do I need to install additional packeges in order to change the screen size on Ubuntu Server.

Any help will be much appreciated.

Ubuntu Server 22.04.3-2024-01-08-08-51-00.zip

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[scottgus1]

You do have full Guest Additions installed. Try increasing video RAM.

[kiekar]

I increased the video ram to maximum (128mb) but still not able to screen mode.

Not sure about full Guest Additions. After mounting the VBoxGuestAdditions.ISO. I ran sudo sh VBoxLinuxAdditions.run. Installed with no errors.

[fth0]

Do I need to install additional packeges in order to change the screen size on Ubuntu Server.

Do you already have an X11 server running? Note that changing the screen size needs an X11 server to work.

[kiekar]

Do you already have an X11 server running? Note that changing the screen size needs an X11 server to work

I do not have X11 server running. Never heard of it. I'm guessing, does this need to run as a guest in it's own virtual machine or does it need to be installed in the ubuntu server virtual machine.

[fth0]

An X11 server has been the foundation of most graphical user interfaces in Linux and UNIX for several decades now (Linux distributions started moving from X11 to Wayland lately). In consequence, we're talking about Ubuntu Server in text mode vs. GUI mode.

If you want to change the screen resolution from outside of the Ubuntu Server guest OS, the latter must run an X11 server. The same holds true if you want to use copy and paste between the guest and the host.