[Bug 1815105] Re: 2.02-2ubuntu8.10 breaks booting from ZFS

[Steve Langasek]

*** This bug is a duplicate of bug 1814403 ***
    https://bugs.launchpad.net/bugs/1814403

The fix for this is the same as the fix for LP: #1814403, so marking as
a duplicate.

** This bug has been marked a duplicate of bug 1814403
   Latest update causes 30 sec. menu delay timeout

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https://bugs.launchpad.net/bugs/1815105

Title:
  2.02-2ubuntu8.10 breaks booting from ZFS

Status in grub2 package in Ubuntu:
  New

Bug description:
  Upon upgrading to grub 2.02-2ubuntu8.10 from 2.02-2ubuntu8.9 all of my
  machines with /boot/grub on ZFS display a long list of the following
  sort at boot, before reaching the GRUB menu.

  Handle 0x49cb9b98
    /ACPI (a0341d0,0)/PCI (0,14)/USB(9.1)/EndEntire
    USB I/O
    device path
  Handle 0x49cb1a1B
    loaded image
  Handle 0x4a280e98
    d088a413-0a70-4217-ba55-9a3ch64c41b3

  This goes on for thousands of lines.  On some machines this only takes
  a few seconds but on other machines this takes over 5 minutes before
  the GRUB menu is displayed.  This is not displayed nor is boot delayed
  when using grub 2.02-2ubuntu8.9.

  Secure boot has no effect on the result.

  Machines with /boot/grub on ext4 do not exhibit this behavior.

  System and package information below:

  Description: Ubuntu 18.04.1 LTS
  Release:     18.04

  grub-common:
    Installed: 2.02-2ubuntu8.10
    Candidate: 2.02-2ubuntu8.10
    Version table:
   *** 2.02-2ubuntu8.10 500
          500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       2.02-2ubuntu8 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

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