[Bug 1855574] Re: grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) failed to upgrade

[lvm]

** Description changed:

  During the routine upgrade grub-efi-amd64-signed
  (1.93.15+2.02-2ubuntu8.14) returned an error:
  
- Setting up grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) ... 
- Installing for x86_64-efi platform. 
- Could not delete variable: Invalid argument 
- grub-install: error: efibootmgr failed to register the boot entry: Block device required. 
- dpkg: error processing package grub-efi-amd64-signed (--configure): 
- installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 
- Errors were encountered while processing: 
- grub-efi-amd64-signed 
+ Setting up grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) ...
+ Installing for x86_64-efi platform.
+ Could not delete variable: Invalid argument
+ grub-install: error: efibootmgr failed to register the boot entry: Block device required.
+ dpkg: error processing package grub-efi-amd64-signed (--configure):
+ installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
+ Errors were encountered while processing:
+ grub-efi-amd64-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)
+ 
+ 
+ Linux server 5.0.0-36-generic #39~18.04.1-Ubuntu SMP Tue Nov 12 11:09:50 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

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https://bugs.launchpad.net/bugs/1855574

Title:
  grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) failed to upgrade

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  During the routine upgrade grub-efi-amd64-signed
  (1.93.15+2.02-2ubuntu8.14) returned an error:

  Setting up grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) ...
  Installing for x86_64-efi platform.
  Could not delete variable: Invalid argument
  grub-install: error: efibootmgr failed to register the boot entry: Block device required.
  dpkg: error processing package grub-efi-amd64-signed (--configure):
  installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Errors were encountered while processing:
  grub-efi-amd64-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  
  Linux server 5.0.0-36-generic #39~18.04.1-Ubuntu SMP Tue Nov 12 11:09:50 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

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