I am a new user of Linux, I am trying to create an Ubuntu 20.04.1 virtual machine using Hyper-V. the Hyper-V Ubuntu virtual machine has created successfully, but when starting the Ubuntu virtual machine, I noticed that the Ubuntu virtual machine is not displayed in full-screen mode.
I checked the display resolution in Ubuntu virtual machine that set to "1152*864 (4:3)" and I can't change it.
Is there any simple way to change Ubuntu display resolution in Hyper-V?
Actually, it's a known issue. by default, the Ubuntu virtual machine display resolution is set to the recommended display resolution, and unfortunately, you can't change this setting from the GUI.
To show Ubuntu virtual machine in Full-Screen Mode by default, you should do the following:
Type the below command line
sudo vi /etc/default/grub
The final line should look like
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=hyperv_fb:1920x1080"
Finally, reboot your system by typing
Here, you can also find the detailed steps to display Ubuntu virtual machine in Full Screen mode in Hyper-V
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