GRUB2 not showing image background

I am trying to add a Grub2 custom graphic background to my system running AlmaLinux 9 (RedHat 9 clone). My */etc/default/grub* file is: GRUB_FONT=fonts/unicode.pf2 GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true #GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M resume=/dev/mapper/almalinux-swap rd.lvm.lv=almalinux/root rd.lvm.lv=almalinux/swap rhgb quiet" GRUB_DISABLE_RECOVERY="true" GRUB_ENABLE_BLSCFG=true GRUB_TERMINAL_OUTPUT="gfxterm" GRUB_BACKGROUND="/boot/grub2/images/mylogo.png" I have tried a 24bit PNG, 24bit JPG, and 8bit JPG (updating the background line accordingly), and after each change rerunning: grub2-mkconfig -o /boot/efi/EFI/almalinux/grub.cfg grub2-mkconfig -o /boot/grub2/grub.cfg My menu is present, as is the correct font, yet I still don't see ANY graphic background. What am I missing? My background image is 640x480. Do I have to exactly match a screen size? (I thought it would scale).