Hoping to find some help debugging an issue I'm having. I have 3 machines that are PXE booting Ubuntu. This morning they were running 17.04 and I decided to upgrade them to 17.10. All 3 machines use the same motherboard with onboard intel nic. After the upgrade, I made the necessary changes to the pxelinux.cfg file to add the new kernel. Now only 2 of the 3 machines boot. The other machine will not boot using the new kernel, only the old one. When I select the new kernel, it tftps the kernel and initrd (I see two "Loading..." lines printed to the screen, also verified in the tftpd logs). Then it just hangs, and doesn't print a single kernel message. All the motherboards have the latest BIOS and have the Intel Boot Agent that they shipped with (doesn't appear to be upgradable). I really have no idea what else to try. Any ideas on how to debug this?