Ubuntu | Change resolution for Hyper V

Ubuntu and Hyper V don't always play nice together in the graphics department. You can edit the resolution via grub

Open grub conf

sudo nano /etc/default/grub

Edit line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=hyperv_fb:1280x720"

Update grub

sudo update-grub

Powershell. This one didn't work for me from stackoverflow

set-vmvideo -vmname "Ubuntu 20.04 Download" -horizontalresolution:1900  -verticalresolution:1200 -resolutiontype single

Done like that