>=UEFI 2.3.1 is the specification demanded by Windows 8 for Secure Boot purposes. I still think Ubuntu should still be able to install on a non secure boot capable system using EFI. There appears to be no other option than >=2.3.1 UEFI or BIOS when trying to install Ubuntu EFI mode. This document goes some way to confirm this http://web.dodds.net/~vorlon/wiki/blog/SecureBoot_in_Ubuntu_12.10/
>=UEFI 2.3.1 is the specification demanded by Windows 8 for Secure Boot purposes. I still think Ubuntu should still be able to install on a non secure boot capable system using EFI. There appears to be no other option than >=2.3.1 UEFI or BIOS when trying to install Ubuntu EFI mode. This document goes some way to confirm this http:// web.dodds. net/~vorlon/ wiki/blog/ SecureBoot_ in_Ubuntu_ 12.10/