I recently installed Arch on an old box for someone else, and I'm running into a problem: I am booting to a GRUB shell, and when I manually load the kernel with `linux /boot/vmlinuz-linux` and `initrd /boot/initramfs-linux.img`, I get a message saying this:

```
error: no suitable video mode found
Booting in blind mode

```

It seems that the kernel was loaded, but none of the userspace is displayed. For a few minutes, I am not allowed to use the keyboard in any sort of way, but after the only thing I am able to do is Ctrl-Alt-Del to reboot. 

I do not know if this is a graphics driver issue, as I'm not too aware of the modes GRUB has. If it is necessary, the graphics card is an ATI/AMD Radeon 6470M HD "Seymour". This issue has never happened on any of my computers running Arch; does anyone know how to get around this?