[Bug 1851955] Re: installation fails in grub-install with: efivarfs_set_variable: writing to fd <N> failed: Invalid argument

[Timofey Vorobyov]

Appeared on kubuntu 20.10 today, after new gtub-efi-amd64-signed version
appeared in the repository:

Setting up grub-efi-amd64-signed (1.155.4+2.04-1ubuntu35.4) ...
Installing grub to /boot/efi.
Installing for x86_64-efi platform.
grub-install: warning: Cannot set EFI variable Boot0000.
grub-install: warning: efivarfs_set_variable: writing to fd 7 failed: Invalid argument.
grub-install: warning: _efi_set_variable_mode: ops->set_variable() failed: Invalid argument.
grub-install: error: failed to register the EFI boot entry: Invalid argument.

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https://bugs.launchpad.net/bugs/1851955

Title:
  installation fails in grub-install with: efivarfs_set_variable:
  writing to fd <N> failed: Invalid argument

Status in efivar package in Ubuntu:
  Confirmed
Status in grub2 package in Ubuntu:
  Confirmed
Status in shim-signed package in Ubuntu:
  Incomplete

Bug description:
  Installed on an ENVY notebook, installation afiled at the end with no
  bootloader message

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: ubiquity 19.10.21
  ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
  Uname: Linux 5.3.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  CasperVersion: 1.427
  Date: Sun Nov 10 08:32:41 2019
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
  LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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