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

[Vivien GUEANT]

More information on the server affected by this bug:

product: Dell PowerEdge R320
capabilities: smbios-2.7 dmi-2.7 smp vsyscall32
firmware version: 2.4.2 date: 01/29/2015
CPU: Intel(R) Xeon(R) CPU E5-1410 0 @ 2.80GHz
boot in UEFI, but without secure boot

uname -a
Linux carte-fh 5.0.0-37-generic #40~18.04.1-Ubuntu SMP Thu Nov 14 12:06:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

dpkg-query -W efibootmgr
efibootmgr	15-1

dpkg-query -W grub-efi-amd64
grub-efi-amd64	2.02-2ubuntu8.14

dpkg-query -W grub-efi-amd64-signed
grub-efi-amd64-signed	1.93.15+2.02-2ubuntu8.14

lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.3 LTS
Release:	18.04
Codename:	bionic

# efibootmgr -v
BootCurrent: 0001
Timeout: 0 seconds
BootOrder: 0004,0000,0002,0003,0005
Boot0000* Windows Boot Manager	HD(1,GPT,0bb8261c-af59-11e2-ad71-d829a5f6482d,0x800,0x32000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...a................
Boot0002* EFI Network 1	PcieRoot(0x0)/Pci(0x1c,0x4)/Pci(0x0,0x0)/MAC(90b11c522ca3,0)/IPv4(0.0.0.00.0.0.0,0,0)
Boot0003* EFI Network 2	PcieRoot(0x0)/Pci(0x1c,0x4)/Pci(0x0,0x1)/MAC(90b11c522ca4,0)/IPv4(0.0.0.00.0.0.0,0,0)
Boot0004* Windows Boot Manager	HD(1,GPT,b221b9be-a399-11d5-a392-d4ae5290fd14,0x800,0x32000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...a................
Boot0005* EFI Fixed Disk Boot Device 1	PcieRoot(0x0)/Pci(0x1f,0x2)/Sata(0,0,0)/HD(1,GPT,c188b9a0-7588-4e8c-a27b-c87039655832,0x800,0x100000)

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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,
  system unbootable

Status in efibootmgr package in Ubuntu:
  Confirmed

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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