[Bug 1839894] Re: Installing Ubuntu 18.04.3 LTS alongside Windows 10 (Dual Boot) causes grub install to fail with fatal error

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

I note the following messages

Aug 12 23:47:46 ubuntu kernel: [  356.482177] FAT-fs (nvme0n1p1): error, fat_get_cluster: invalid cluster chain (i_pos 0)
Aug 12 23:47:47 ubuntu grub-installer: grub-install: error: cannot open `/boot/efi/EFI/ubuntu/grubx64.efi': Input/output error.

I would suggest `fsck` (ie. performing a file system check) or
`badblocks`  of your EFI partition, or ensuring 'fastboot' is disabled
in windows 10 to ensure the EFI partition is left in a clean state.

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https://bugs.launchpad.net/bugs/1839894

Title:
  Installing Ubuntu 18.04.3 LTS alongside Windows 10 (Dual Boot)  causes
  grub install to fail with fatal error

Status in grub-installer package in Ubuntu:
  New

Bug description:
  1. Installing Ubuntu 18.04.3 LTS on HP Spectre x360 Convertible laptop alongside pre-installed Windows 10 (Dual Boot)
  2. Windows installed in UEFI mode
  3. Ubuntu installation fails towards the end when attempting to install grub2

  Expected:
  Install to be successful

  Actual:
  Install failed when trying to install grub

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14.12
  ProcVersionSignature: Ubuntu 5.0.0-23.24~18.04.1-generic 5.0.15
  Uname: Linux 5.0.0-23-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.7
  Architecture: amd64
  CasperVersion: 1.394
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Aug 12 16:54:19 2019
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
  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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