[Bug 1814575] Re: Updates failing because "db is empty"

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: grub2 (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1814575

Title:
  Updates failing because "db is empty"

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  Fix this:

  On some Thinkpads (up to now, no other manufacturers appear to show
  this), db can be reported to be empty even though it's not. It seems
  to be a firmware issue, but it's one we can work around.

  So, fix this type of failure:

  Setting up grub-efi-amd64-signed (1.112+2.02+dfsg1-5ubuntu10) ...
  db is empty
  Can't open *.der for reading, No such file or directory
  140033418155072:error:02001002:system library:fopen:No such file or directory:../crypto/bio/bss_file.c:72:fopen('*.der','rb')
  140033418155072:error:2006D080:BIO routines:BIO_new_file:no such file:../crypto/bio/bss_file.c:79:
  unable to load certificate
  dpkg: error processing package grub-efi-amd64-signed (--configure):
   installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  dpkg: dependency problems prevent processing triggers for shim-signed:
   shim-signed depends on grub-efi-amd64-signed | grub-efi-arm64-signed; however:
    Package grub-efi-amd64-signed is not configured yet.
    Package grub-efi-arm64-signed is not installed.

  dpkg: error processing package shim-signed (--configure):
   dependency problems - leaving triggers unprocessed
  Errors were encountered while processing:
   grub-efi-amd64-signed
   shim-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)

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