I have Ubuntu installed on a macbook pro 13". I boot via an efi boot selector followed by the standard grub bootloader.

After my computer lost power (while running Ubuntu), my computer will no longer boot into Ubuntu: after selecting Ubuntu in the Grub menu, it just loads a blank screen that says the battery state is okay and then does nothing else.

Any ideas as to what could cause Ubuntu not to boot after a power failure?

Thanks!

Ryan