Stuck at "ipxe initialising devices.." (Lenovo again)

[jmeyer]

Hello,
I have 2 installations of FOG, one under version 1.5.10 and another under 1.6.0-alpha.
On the 1.5.0 I can boot on PXE on the 1.6.0-aplha I get stuck at “ipxe initialising devices…”
I have update kernels, rebuild efi files and I still don’t find what I have changed to fixe this or what can be different between the two installation.
I know it’s not snponly.efi since PXE start to load.
What are the next file use in the UEFI pxe boot process that could I have different from one installation to an other ?
Thank you.

[Tom Elliott]

Often time,s this seems to be due to UEFI Secure boot being enabled when it should be disabled.