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How To Use Ubuntu in Full Screen Mode on VirtualBox

Ubuntu 9

In this article, we will guide you through the process of using Ubuntu in full-screen mode on VirtualBox. VirtualBox, a powerful x86 and AMD64/Intel64 virtualization product, is a tool that not only extends the capabilities of your existing computer but also allows you to run multiple operating systems simultaneously.

Quick Answer

To use Ubuntu in full-screen mode on VirtualBox, start your Ubuntu virtual machine, press the Host Key (by default, Right Ctrl) + F to enter full-screen mode. If this shortcut doesn’t work, you can change the host key in VirtualBox preferences. Additionally, make sure to install Guest Additions in the virtual machine to optimize performance and enable larger display resolutions.

Getting Started

Before we begin, ensure that you have the latest version of VirtualBox installed on your system. You can download it from the official VirtualBox website. Also, make sure you have Ubuntu installed as a virtual machine.

Entering Full-Screen Mode

To enter full-screen mode, start your Ubuntu virtual machine and press the Host Key (by default, it is Right Ctrl) + F. If this shortcut doesn’t work, you can change the host key by navigating to the File menu, selecting Preferences, and then choosing Input. Here, you can set your desired host key.

Installing Guest Additions

In order to enable full-screen mode, you need to install Guest Additions. Guest Additions are designed to be installed inside a virtual machine after the guest operating system has been installed. They consist of device drivers and system applications that optimize the guest operating system for better performance and usability.

Here is how to install Guest Additions:

  1. In the virtual machine window, go to the Devices menu and choose Install Guest Additions.
  2. A virtual CD containing the Guest Additions will be mounted in the virtual machine. Open the Guest Additions folder, usually located on the desktop or in the Places menu.
  3. Double-click on the Autorun.sh file and select Run in Terminal. Enter your password when prompted and wait for the installation to complete.

Post Installation Steps

After installing Guest Additions, restart your virtual machine. Once the virtual machine restarts, you should have better performance and access to larger display resolutions, enabling you to use Ubuntu in full-screen mode.

Troubleshooting

If you encounter any issues, here are a few alternative methods:

  • In VirtualBox 6.0, you can try selecting Insert Guest Additions CD Image instead of using the Devices menu.
  • Install the packages virtualbox-ose-guest-dkms, virtualbox-ose-guest-utils, and virtualbox-ose-guest-x11 inside the virtual machine to have more display resolution options.
  • If you are unable to enter full-screen mode, you can try changing the resolution in the display settings of Ubuntu. Right-click on the Ubuntu desktop, select Display settings, and adjust the resolution to fit your screen.
  • In VirtualBox version 4.0 and above, dynamic screen size setting is available, allowing the virtual machine to match the host resolution automatically by resizing the window.

Conclusion

Using Ubuntu in full-screen mode on VirtualBox can greatly enhance your user experience, providing a more immersive and seamless environment. By following the steps outlined in this guide, you should now be able to enjoy a full-screen Ubuntu experience on your VirtualBox. If you encounter any issues, do not hesitate to consult the VirtualBox forums or the Ubuntu community for help.

How do I change the host key in VirtualBox?

To change the host key in VirtualBox, go to the File menu, select Preferences, and then choose Input. Here, you can set your desired host key.

How do I install Guest Additions in VirtualBox?

To install Guest Additions in VirtualBox, start your virtual machine, go to the Devices menu, and choose Install Guest Additions. A virtual CD containing the Guest Additions will be mounted in the virtual machine. Open the Guest Additions folder, usually located on the desktop or in the Places menu. Double-click on the Autorun.sh file and select Run in Terminal. Enter your password when prompted and wait for the installation to complete.

How do I restart the virtual machine after installing Guest Additions?

To restart the virtual machine after installing Guest Additions, you can either click on the Restart button within the Ubuntu guest operating system or go to the Machine menu in VirtualBox and select Reset.

How do I change the resolution in Ubuntu?

To change the resolution in Ubuntu, right-click on the Ubuntu desktop, select Display settings, and adjust the resolution to fit your screen.

How do I match the host resolution automatically in VirtualBox?

In VirtualBox version 4.0 and above, dynamic screen size setting is available. This allows the virtual machine to match the host resolution automatically by resizing the window.

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