[Bug 1990294] Re: Ampere AltraMax sometimes hangs after "EFI stub: Exiting boot services..."

[Taihsiang Ho]

I rebooted the system with mainline kernel v6.0.9, and I can similar
kernel panic at 302th reboot. See the log attachment
papat-221211-reboot_mainline-6.0.9-060009-generic_kernel-panic.log for
the kernel panic message.


** Attachment added: "papat-221211-reboot_mainline-6.0.9-060009-generic_kernel-panic.log"
   https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1990294/+attachment/5635393/+files/papat-221211-reboot_mainline-6.0.9-060009-generic_kernel-panic.log

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https://bugs.launchpad.net/bugs/1990294

Title:
  Ampere AltraMax sometimes hangs after "EFI stub: Exiting boot
  services..."

Status in grub2 package in Ubuntu:
  New
Status in linux package in Ubuntu:
  In Progress

Bug description:
  When kernel test rebooted onto the 5.15.0-43-generic HWE kernel, no
  output appeared on the console after the EFI stub:

  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint A0
  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint 92
  Checkpoint AD
  EFI stub: Booting Linux Kernel...
  EFI stub: ERROR: FIRMWARE BUG: kernel image not aligned on 64k boundary
  EFI stub: Using DTB from configuration table
  EFI stub: Exiting boot services...

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