[Bug 1786090] Re: Installation fails on HP T610 Plus Thin Client internal flash (EFI)

[Steve Langasek]

Ok, with a compliant EFI implementation, there's no reason that warm vs
cold boot should be a factor either, but it's interesting to know and
gives us a starting point.

If you've hit the problem so many times already, it seems likely that
the problem will reproducible again on updates to the grub2-signed or
shim-signed packages on your system.  You may even be able to reproduce
it manually by running 'efibootmgr' commands.  Any reproducer that gets
us some dmesg output would be helpful.

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Title:
  Installation fails on HP T610 Plus Thin Client internal flash (EFI)

Status in grub-installer package in Ubuntu:
  New
Status in shim-signed package in Ubuntu:
  Incomplete

Bug description:
  I tried to install Xubunti 18.04.1 LTS on a HP T610 Plus thin client
  with the 1.20 Rev A BIOS (recently upgraded from 1.16 Rev A).

  The installation proceeded normally until the bootloader was installed
  -- grub-install failed.

  I ran grub-install a second time from a console and got the same error
  as seen in the installer:

  <pre>$ sudo chroot /target grub-install /dev/sda
  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.
  </pre>

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14.6
  ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
  Uname: Linux 4.15.0-29-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  CasperVersion: 1.394
  Date: Wed Aug  8 19:23:41 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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