I had the same problem. The sollution that worked for me was - starting up with the usb, - dowloading boot-repair - starting boot repair, using advanced options -> it points efi out, and suggest to repair the system partition.
It may work as a workaround. Proper check by expert user required for suitability -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1222017 Title: [Asus SABERTOOTH 990FX R2.0] UEFI GRUB Fails After 13.10 Beta1 Installation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1222017/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
