Alpine Linux Modify Screen Resolution

I login as root then

vi /etc/default/grub

You can also login as a non root user then

doas vi /etc/default/grub

• Modify 1 line.
• Add 2 lines

GRUB_CMDLINE_LINUX_DEFAULT="... video=640x480"
GRUB_GFXMODE=640x480
GRUB_GFXPAYLOAD_LINUX=keep

Apply the changes then reboot .

grub-mkconfig -o /boot/grub/grub.cfg
reboot

The VM screen is now 640x480.

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