GRUB_GFXPAYLOAD_LINUX="keep" GRUB_GFXMODE=1024x768,auto
sudo update-grub
List of gfx modes can be checked by “vbeinfo” grub command“
dpkg-reconfigure console-setup
UTF-8, Latin-2, Terminus, 6×12
CHARMAP="UTF-8" CODESET="Lat2" FONTFACE="Terminus" FONTSIZE="6x12" VIDEOMODE=