[How to] Change Screen Resolution on Ubuntu 18.04 in Hyper-V VM

ubuntu_HyperV

https://metinsaylan.com/8991/how-to-change-screen-resolution-on-ubuntu-18-04-in-hyper-v/

Just follow those simple steps to change the screen resolution:

1. Open a terminal window
2. Type: sudo vi /etc/default/grub
3. Find the line starting with GRUB_CMDLINE_LINUX_DEFAULT,
4. Append video=hyperv_fb:1280x720 so the line should be like;
                GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=hyperv_fb:1920x1080"
5. Write changes to the file and exit using ESC + :wq
6. Run sudo update-grub command to update grub configuration.
7. Reboot the machine (You can use sudo /sbin/shutdown -r now command)
Voila! Your VM now should start with the new resolution you provided.