[Bug 1913253] Re: package grub-efi-amd64-signed 1.155.2+2.04-1ubuntu35.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[ger tielemans]

got this later on:

dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem. 
ger at ger-ubuntu:~$ sudo dpkg --configure -a
Setting up grub-efi-amd64-signed (1.155.2+2.04-1ubuntu35.2) ...
Installing grub to /boot/efi.
Installing for x86_64-efi platform.
Installation finished. No error reported.
Setting up linux-image-5.8.0-41-generic (5.8.0-41.46) ...
Processing triggers for linux-image-5.8.0-41-generic (5.8.0-41.46) ...
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-5.8.0-41-generic
/etc/kernel/postinst.d/zz-update-grub:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.8.0-41-generic
Found initrd image: /boot/initrd.img-5.8.0-41-generic
Found linux image: /boot/vmlinuz-5.8.0-25-generic
Found initrd image: /boot/initrd.img-5.8.0-25-generic
Adding boot menu entry for UEFI Firmware Settings

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https://bugs.launchpad.net/bugs/1913253

Title:
  package grub-efi-amd64-signed 1.155.2+2.04-1ubuntu35.2 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 1

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  Immediate problem after reinstallation using zfs.

  The initial installation was overwritten.

  The initial installation did not allow updating grub.cfg

  I do not know what is wrong, but I suspect it is grub (os-prober) ??

  ProblemType: Package
  DistroRelease: Ubuntu 20.10
  Package: grub-efi-amd64-signed 1.155.2+2.04-1ubuntu35.2
  ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
  Uname: Linux 5.8.0-25-generic x86_64
  NonfreeKernelModules: nvidia zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu50
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Tue Jan 26 00:07:25 2021
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-0ubuntu1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.20.5ubuntu2
   apt  2.1.10
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.155.2+2.04-1ubuntu35.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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