Have you resolved the issue? I am currently struggling to install Arch Linux onto an EFI-based Intel Server. What version of EFI does your motherboard have? (Check this by executing 'ver' in the EFI shell). Can you execute EFI applications by simply typing their absolute path?
We would like to inform you that the support we offer for Linux is limited since Intel motherboards are not designed to support this specific Operating System. Our recommendation is contacting you Linux distribution support group for further assistance on your inquiry. Thank you for your understanding.