[Bug 1767259] Re: ubuntu 18.04 The 'grub-efi-amd64-signed' package failed to install into / targer.

[Ken Hughes]

*** This bug is a duplicate of bug 1767703 ***
    https://bugs.launchpad.net/bugs/1767703

I encountered this today while trying to install 18.04.2.  I previously installed Linux Mint 19.1 on the same UEFI SSD with Secure Boot enabled with no issues.  
1) After the 18.04.2 failed I deleted the existing partitions; that didn't help.
2) I then reinstalled Mint 19.1, again with no problems.
3) Tried 18.04.2, failed again.  Before running ubiquity I tried installing grub-efi-amd64-signed using apt-get but got errors complaining about unmet dependencies.  
4) I rebooted the USB installer and tried again, and when it failed saved the system log (attached).  It shows the same errors with grub-efi-amd64-signed.


** Attachment added: "syslog"
   https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1767259/+attachment/5269010/+files/syslog

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https://bugs.launchpad.net/bugs/1767259

Title:
  ubuntu 18.04 The 'grub-efi-amd64-signed' package failed to install
  into / targer.

Status in grub-installer package in Ubuntu:
  Confirmed

Bug description:
  ubuntu 18.04 The 'grub-efi-amd64-signed' package failed to install
  into / targer.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CasperVersion: 1.394
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 27 08:31:02 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  ProcEnviron:
   LANGUAGE=en_US.UTF-8
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   LC_NUMERIC=C.UTF-8
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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