Booting Ubuntu 14.04 Live via iPXE on UEFI

[looselyrigorous]

Hello,

I am having issues with booting the Ubuntu Live Image via iPXE on UEFI. I've tried two laptops, and they both kernel panic. What is weird, though, is that it boots fine inside VirtualBox, but not on actual UEFI.

Relevant Code (approximation):

kernel nfs://.../vmlinuz.efi
initrd nfs://.../initrd.lz
imgargs vmlinuz.efi initrd=initrd.lz netboot=nfs nfsroot=... boot=casper

I found about the need for initrd=initrd.name from somewhere in the forums, looks like it's a bug in kernels prior to 3.16 or so. Without it, not even VBox works. When removing it in fact, it produces the EXACT same kernel panic in VBox.

It sounds like adding that piece of text should have fixed everything, but it still appears broken when it comes to actual UEFI hardware.

Any ideas?