Dell latitude E7480

[guerby]

Hi,

I'm trying netboot.xyz on a dell latitude E7480 laptop (UEFI network stack enabled, Secure boot disabled), I see the tftp happens but then just after a screen flicker the BIOS proposes F1 to retry boot, etc... On the exact same setup another (noname) laptop netboot.xyz works just fine
Is there any way to debug what's happening?

Code:

dmidecode
BIOS Information
    Vendor: Dell Inc.
    Version: 1.2.9
    Release Date: 03/21/2017

lspci
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (4) I219-LM (rev 21)

lspci -vn
00:1f.6 0200: 8086:15d7 (rev 21)
    Subsystem: 1028:07a0
    Flags: bus master, fast devsel, latency 0, IRQ 131
    Memory at ef200000 (32-bit, non-prefetchable) [size=128K]
    Capabilities: [c8] Power Management version 3
    Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [e0] PCI Advanced Features
    Kernel driver in use: e1000e
    Kernel modules: e1000e

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