[Bug 1565328] Re: 16.04 installation - grub efi fails to install on MacBookPro (efi)

[TBerk]

*** This bug is a duplicate of bug 1062623 ***
    https://bugs.launchpad.net/bugs/1062623

I am not quite the same as I am not using Cryptography nor LVM volumes
but in my case I am attempting to single boot a Macbook Pro using the
uEFI x64 version of Ubuntu Studio from a 4G flash drive.

I choose the 'Something Else' option and attempt to create separate
partitions for '/' and 'HOME' mount points; all seems well until the
error "grub-efi-amd64-signed failed ...".

I have tried to create leading FAT32 partitions ahead of the OS space,
all for naught.

If this bug report I'm adding too is too specific for "Created luks
encrypted partition with LVM volumes in it" reasons I'll be looking for
a more generic one to join.

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https://bugs.launchpad.net/bugs/1565328

Title:
  16.04 installation - grub efi fails to install on MacBookPro (efi)

Status in grub-installer package in Ubuntu:
  Confirmed

Bug description:
  Dual booting on a MacbookPro
  Created luks encrypted partition with LVM volumes in it
  Installation works but installation of grub efi fails.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubiquity 2.21.53
  ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6
  Uname: Linux 4.4.0-16-generic x86_64
  ApportVersion: 2.20.1-0ubuntu1
  Architecture: amd64
  CasperVersion: 1.370
  Date: Sat Apr  2 19:30:33 2016
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/xubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Xubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160402)
  ProcEnviron:
   LANGUAGE=en_IE.UTF-8
   PATH=(custom, no user)
   LANG=en_IE.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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