[Bug 1989207] [NEW] Cannot install Kubuntu as a dual-boot in UEFI mode

[Mika Mäki]

Public bug reported:

Attempting to install Kubuntu 22.04.1 from a UEFI-booted USB drive to a
GPT-formatted SSD with an existing Windows installation results in the
error "Executing 'grub-install /dev/sda' failed. This is a fatal error".
The USB drive is booted in UEFI mode with Secure Boot enabled. The
target partitions for root, swap and boot have been specified manually
for a LUKS-encrypted installation alongside an existing unencrypted
Windows installation, but the target for the bootloader has been left as
the default (/dev/sda). The swap and ext4-formatted root partition on an
LVM inside a LUKS container, and the boot partition is a normal
ext4-formatted partition. The existing EFI system partition has been
selected to be used. Online sources seem to indicate that the setting
for the bootloader target should not matter in the UEFI mode, as the
boot configuration should be automatically written to the EFI system
partition instead. However, it seems that the installer might not
somehow recognize that Kubuntu is being installed in UEFI mode.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubiquity 22.04.17 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 5.15.0-43.46-generic 5.15.39
Uname: Linux 5.15.0-43-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.470
CurrentDesktop: KDE
Date: Fri Sep  9 19:10:50 2022
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Kubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy kubuntu ubiquity-22.04.17

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https://bugs.launchpad.net/bugs/1989207

Title:
  Cannot install Kubuntu as a dual-boot in UEFI mode

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Attempting to install Kubuntu 22.04.1 from a UEFI-booted USB drive to
  a GPT-formatted SSD with an existing Windows installation results in
  the error "Executing 'grub-install /dev/sda' failed. This is a fatal
  error". The USB drive is booted in UEFI mode with Secure Boot enabled.
  The target partitions for root, swap and boot have been specified
  manually for a LUKS-encrypted installation alongside an existing
  unencrypted Windows installation, but the target for the bootloader
  has been left as the default (/dev/sda). The swap and ext4-formatted
  root partition on an LVM inside a LUKS container, and the boot
  partition is a normal ext4-formatted partition. The existing EFI
  system partition has been selected to be used. Online sources seem to
  indicate that the setting for the bootloader target should not matter
  in the UEFI mode, as the boot configuration should be automatically
  written to the EFI system partition instead. However, it seems that
  the installer might not somehow recognize that Kubuntu is being
  installed in UEFI mode.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubiquity 22.04.17 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 5.15.0-43.46-generic 5.15.39
  Uname: Linux 5.15.0-43-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.470
  CurrentDesktop: KDE
  Date: Fri Sep  9 19:10:50 2022
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Kubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
  RebootRequiredPkgs: Error: path contained symlinks.
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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