I recently dual booted my Windows 8 with Ubuntu 13.04 64-bit on EFI.
I followed the standard procedure and did
boot-repair in the end.
Now, when I choose Ubuntu option from the grub menu, all I get is a black screen. Also ,if I now try to reinsert my Pen Drive (UEFI), and try to boot from it, I get a black screen again. What can the possible issue be?