This guide assumes you’re using GRUB as your bootloader

Simply edit your GRUB config file (/etc/default/grub) and change the line below to match your desired resolution

GRUB_GFXPAYLOAD_LINUX=1920x1080

Remember to uncomment this line if it’s commented, by removing the hash sign at the beginning of the line

After that, simply run update-grub (requires root, use doas or sudo) and reboot your system for the changes to take effect

Special thanks to Matthew Scharley for his insightful answer on StackOverflow