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archiveApr 1, 2021

Hyper-V Ubuntu 20.04 Full-Screen Fix

Set Ubuntu 20.04 on Hyper-V to 1920x1080 by editing GRUB's hyperv_fb mode, updating grub, and rebooting.

Ubuntu 20.04 on Windows Hyper-V

After enabling the Hyper-V feature

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Hyper-V Manager

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In Hyper-V Manager, choose Quick Create to open the new VM wizard.
Select Ubuntu 20.04, create the VM, and wait for setup to finish.

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Once install completes, Ubuntu boots.

Full-screen setup for the Ubuntu VM

vim /etc/default/grub

Edit the GRUB config.

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Update line 10:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=hyperv_fb:1920x1080

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Save the change, then run the update command.

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init 6

Reboot.

Full screen working

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