Any chance to get grub-invaders booting with grub-efi-amd64?

[Fabian Greffrath]

Hi there,

grub-invaders [1] is a multiboot compliant kernel game.

I'd really like to get this little game running *somehow* on my current 
system. I have grub-efi-amd64 installed as my current boot loader and 
Legacy Mode is disabled in the BIOS. The first hurdle was to disable 
Secure Boot in order for GRUB to load the multiboot module. But even 
now, the game doesn't start. Instead, it only shows the GRUB background 
image and nothing happens.

I understand that the game uses quite some BIOS calls, so I tried to 
"provide it some BIOS" by loading a SeaBIOS image with 'loadbios' and 
calling 'fakebios' before the multiboot call, but this didn't help 
either. I am confident that the game's compiled ELF image itself is 
functional, as it suceeds to load with QEMU.

Additionally, the game runs in pure 80x25 text mode, but GRUB seems to 
refuse to switch away from graphical mode. Is it possible to enforce 
this somehow?

Any change to get this neat kernel game to work with an EFI GRUB?

Thanks!

 - Fabian


[1] https://tracker.debian.org/pkg/invaders

 Originally, the game is called "invaders", but since this sounds a bit 
too generic, the term "grub-invaders" has somehow established - although 
multiboot-invaders or bios-invaders would have been good monikers as 
well.

Original Homepage: http://www.erikyyy.de/invaders/
Debian packaging Sources: https://salsa.debian.org/games-team/invaders