[Bug 1654779] Re: installer crashes on grub installation (forced UEFI install) calling 'grub-efi-amd64-signed' failed

[Someone Else]

Thank you for taking the time to look into the issue. One thing I want
to note though, is that the installer also crashed, when I selected the
"safe" option. I think it even spit out the same error message, but I
don't  remember 100%. But I think the problem had more to do with my
strange setup here. But once again thanks for taking your time!

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Title:
  installer crashes on grub installation (forced UEFI install) calling
  'grub-efi-amd64-signed' failed

Status in grub-installer package in Ubuntu:
  Invalid

Bug description:
  Tried a clean install of 16.04 from a USB stick in UEFI mode. Got a warning, that another system (Win10) was installed on another disk in legacy mode and might not boot, if I used force UEFI mode. Commenced with forced UEFI install and at the end it stated:
  errors were encountered wjile processing 
  grub-efi-amd64-signed
  shim-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  info: Calling 'apt-install grub-efi-amd64-signed' failed.
  But I guess that's in the logfile as well.
  A sudo apt-get install grub-efi-amd64-signed seems to have been successful. But I'll have to reboot to see. Also I did sudo apt-get install shim-signed.
  Hope you can find the bug. If you can't I'll gladly assist you trying to recreate the same situation using an ssh oder whatever you prefere.
  #
  Description:	Ubuntu 16.04.1 LTS
  Release:	16.04

  apt-cache policy pkgname
  returns: N: Unable to locate package pkgname

  System:
  2 HDDs (tried to install Ubuntu on one of them, 1 ext4 1 swap partition and bootloader for Ubuntu were to be installed here)
  1 SSD with just Windows 10 64 bit on it
  i7-4770s
  R9-280X
  16GB RAM
  Asus M51AC PC
  USB stick was prepared using Rufus in GPT UEFI mode and FAT32 on a 32 GB sandisk cruzer in ISO mode

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubiquity 2.21.63.2 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  Uname: Linux 4.4.0-31-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CasperVersion: 1.376
  Date: Sat Jan  7 20:18:51 2017
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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