[Bug 2044549] Re: pxe boot on arm64 stopped working

[Mate Kukri]

As explained above, after extensive debugging in January, no obvious
issue in GRUB was found, and this seems like a bug in the firmware
network driver that causes it to lock up.

If new information comes about, I am open to revisiting this, but I am
closing this for now.

** Changed in: grub2 (Ubuntu)
       Status: Incomplete => Invalid

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Title:
  pxe boot on arm64 stopped working

Status in grub2 package in Ubuntu:
  Invalid

Bug description:
  We have a lab with eight arm64 machines which are deployed from MAAS (also on arm64). 
  Two weeks ago we noticed the commissioning in MAAS is not working.
  We can see MAAS sends two files (bootaa64.efi and grubaa64.efi) as requested and then machine goes to grub prompt.
  @alexsander-souza from MAAS team had a look and he suspects grub issue. net_bootp command returns "error: couldn't send  network packet".
  Sometimes when machine is power cycled it can deploy again, but not always.
  Any idea how to debug this?

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