TL;DR

To change the screen resolution of a VM in Hyper-V, use PowerShell. The command requires the VM name and the desired resolution.

Context

Unlike in VirtualBox, in Hyper-V I could not find a GUI option to change the screen resolution directly. Instead, I had to use PowerShell to adjust the display settings of your virtual machine.

Steps

1. Identify the VM Name

Find the name of your VM in Hyper-V Manager. (Search for Hyper-V Manager in the start menu to access it)

1. Open PowerShell

Open a PowerShell terminal on your host machine.

1. Execute the Command

Use the following PowerShell command, replacing "Ubuntu 22.04 LTS2" with your VM's name and adjusting the resolution as needed:

Set-VMVideo -VMName "Ubuntu 22.04 LTS2" -HorizontalResolution 1920 -VerticalResolution 1080 -ResolutionType Single

• HorizontalResolution : The width of the screen in pixels (e.g., 1920).
• VerticalResolution : The height of the screen in pixels (e.g., 1080).
• ResolutionType : Set to Single for a single monitor setup.

References

• How to adjust virtual machine display resolution in Hyper-V
• Hyper-V: Change Resolution