How To Make Debian Linux Fullscreen in Hyper-V

debian-fullscreen-in-hyperv.md

1. Run sudo vim /etc/default/grub
2. Find GRUB_CMDLINE_LINUX_DEFAULT
3. Append video=hyperv_fb:[the resolution you want], for example: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=hyperv_fb:1920x1080"
4. Write the changes, quit Vim
5. Run sudo update-grub
6. Run sudo reboot

h/t https://blogs.msdn.microsoft.com/virtual_pc_guy/2014/09/19/changing-ubuntu-screen-resolution-in-a-hyper-v-vm/

Good job!!! But not all Debian distributions can do it without these lines and commands.
Add these lines to this file:
sudo nano /etc/initramfs-tools/modules
hv_vmbus
hv_storvsc
hv_blkvsc
hv_netvsc
In terminal enter:
sudo apt-get install hyperv-daemons
sudo update-initramfs -u
Make a reboot:
reboot

This no longer seems to work on Windows 10 using Client Hyper-V and Debian 12 guest.

For Debian 12, I had to change video=hyperv_fb:... to video=Virtual-1:...

Thanks, I will give that a go and report back.

For Debian 12, I had to change video=hyperv_fb:... to video=Virtual-1:...

and then select the desired resolution in the display settings.

Worked like a charm, thanks!