[Bug 2073634] Re: Enable suppression of /EndEntire message

[Robert Liu]

** Description changed:

- Many Ubuntu Core customers require a boot sequence that displays a
+ [ Impact ]
+ 
+  * Many Ubuntu Core customers require a boot sequence that displays a
  custom splash image up until ubuntu-frame loads. Unfortunately, GRUB
- often (if not always) interrupts this process, printing two "/EndEntire"
- messages to the display. Ideally, this should be able to be suppressed
- via configuration, at least on devices running Ubuntu Core, as it likely
- desirable behavior on Classic systems.
+ interrupts this process, printing two "/EndEntire" messages to the
+ display.
+ 
+  * Ideally, this should be able to be suppressed via configuration, at
+ least on devices running Ubuntu Core, as it likely desirable behavior on
+ Classic systems.
+ 
+  * The message only happens with Ubuntu Core, because Ubuntu Core is
+ using chainloader of GRUB to load the kernel EFI image.
+ 
+ 
+ [ Test Plan ]
+ 
+  * Boot a Ubuntu Core image on an AMD64 device with UEFI support
+ 
+  * During the boot process, check if the console shows "/EndEntire" and
+ "file path: /ACPI..."
+ 
+ 
+ [ Where problems could occur ]
+ 
+  * Removing or suppressing the messages would not cause any reggression.
+ 
+  * By checking the code, the messages are only for debug purpose. So
+ removing the messages doesn't change any logic or flow in GRUB.
+ 
+  * When the messages are removed, the boot process should be a little
+ faster than before. If there's a device/peripheral needs more time for
+ initialization, it could be a problem for the following boot process.
+ However, this situation is not controllable by GRUB.
+ 
+ [ Other Info ]
+ 
+  * None

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https://bugs.launchpad.net/bugs/2073634

Title:
  Enable suppression of /EndEntire message

Status in OEM Priority Project:
  New
Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Focal:
  Confirmed
Status in grub2 source package in Jammy:
  Confirmed
Status in grub2 source package in Noble:
  Confirmed
Status in grub2 source package in Oracular:
  Fix Released

Bug description:
  [ Impact ]

   * Many Ubuntu Core customers require a boot sequence that displays a
  custom splash image up until ubuntu-frame loads. Unfortunately, GRUB
  interrupts this process, printing two "/EndEntire" messages to the
  display.

   * Ideally, this should be able to be suppressed via configuration, at
  least on devices running Ubuntu Core, as it likely desirable behavior
  on Classic systems.

   * The message only happens with Ubuntu Core, because Ubuntu Core is
  using chainloader of GRUB to load the kernel EFI image.

  
  [ Test Plan ]

   * Boot a Ubuntu Core image on an AMD64 device with UEFI support

   * During the boot process, check if the console shows "/EndEntire"
  and "file path: /ACPI..."

  
  [ Where problems could occur ]

   * Removing or suppressing the messages would not cause any
  reggression.

   * By checking the code, the messages are only for debug purpose. So
  removing the messages doesn't change any logic or flow in GRUB.

   * When the messages are removed, the boot process should be a little
  faster than before. If there's a device/peripheral needs more time for
  initialization, it could be a problem for the following boot process.
  However, this situation is not controllable by GRUB.

  [ Other Info ]

   * None

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