How to get a HyperV Virtual Machine to go Full-Screen - Ubuntu/Linux
I've found an answer to this question, but no thanks to the answers left on another similar question. That question is locked, so I was not able to comment the solution.
If you're running a Linux virtual machine, such as Ubuntu:
- Launch the virtual machine and log in.
- Launch the Terminal
- Type: sudo nano /etc/default/grub
- Hit 'Enter' on your keyboard
- If you have an administrator password, type it in and hit 'Enter' on your keyboard.
- Your terminal should look like this:

- Using your arrow keys (<^v>), navigate down to the line that reads, "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash", with your curser over the last double quote symbol (").
- Type: video=hyperv_fb:1920x1080
- Your terminal should look like this:

- Hit 'Enter' on your keyboard
- Press 'CTRL+x' on your keyboard
- Press 'Y' or 'y' to save
- Hit 'Enter' on your keyboard
- Type: sudo update-grub
- Hit 'Enter' on your keyboard
- Finally, to implement your results, reboot the vm by typing: init 6
- Hit 'Enter' on your keyboard
- Wait for your VM to reboot.
Here's a video that shows the exact process with Ubuntu: (189) How to run HyperV base Ubuntu VM full screen - YouTube