VirtualBox Guest Additions for Ubuntu 18.04: A Step-by-Step Guide

Are you experiencing issues with screen resolution when running Ubuntu 18.04 as a virtual machine within VirtualBox on Windows 10? You're not alone. Many users have reported similar problems, but the good news is that there's a solution.

After trying various methods to resolve this issue, I've found that installing Guest Additions and following some specific steps can help you achieve a full-screen experience. Here's a step-by-step guide to get you started:

1. Assign more display memory: Before proceeding with installing Guest Additions, ensure that you assign enough display memory in the VirtualBox settings.

2. Install Guest Additions 6.1.5: Download and install Guest Additions 6.1.5 from a reliable source. This version has been known to resolve screen resolution issues.

If you're using the latest VirtualBox version 6.1.4, you may encounter issues with installing Guest Additions. In such cases, consider downgrading to an earlier version or using a different solution.

3. Restart your OS: Once you've installed Guest Additions, restart your Ubuntu 18.04 virtual machine. This should automatically run the installation and prompt you to install any missing dependencies.

4. Focus on output while installing: Keep an eye on the output during the installation process, as this will help you identify any potential issues or errors.

Next, follow these steps:

1. Insert Guest Additions CD image: Click on 'Devices' > 'Insert Guest Additions CD image' to access the Guest Additions installation media.

2. Install dependencies: Open a terminal and run the following command: `sudo apt install gcc make perl`. This will ensure that all necessary dependencies are installed.

3. Install VirtualBox Extension pack: After installing Guest Additions, you'll need to install the VirtualBox Extension pack from the official website.

Now, follow these important steps:

1. Update your system: Click on the '9 dots' (Show Applications) icon and select 'Software Update' to ensure that all pending updates are installed.

2. Restart your virtual machine: Your virtual machine will restart after installing Guest Additions.

3. Install Ubuntu with updates: During the installation process, opt for a 'normal installation' and make sure to select the following options: 'Download updates while installing Ubuntu' and 'Install third-party software for graphics and Wi-fi hardware and additional media formats'.

By following these steps, you should be able to achieve a full-screen experience when running Ubuntu 18.04 within VirtualBox on Windows 10. Remember to focus on the output during installation and keep an eye out for any potential issues or errors.

Important note: Be cautious when trying different solutions online, as some may potentially corrupt your installed guest OS. Instead, follow these steps carefully to ensure a successful installation of Guest Additions and a full-screen experience with Ubuntu 18.04 on VirtualBox.

Virtualbox guest additions ubuntu 18.04