[Bug 1796446] [NEW] grub crash on 18.04 install with mdadm

[Ken LaBar]

Public bug reported:

1. 18.04 LTS Startup USB Disk
2. grub (not yet installed)
3. Expect successful install of Ubuntu on new computer
4. grup crashed on install

New computer build.
Installing 18.04 LTS desktop from USB.
Configured 3 disk RAID 10 with mdadm prior to running Install.
grub crashed roughly 70% through install.

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
Date: Fri Oct  5 21:54:57 2018
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug bionic ubiquity-18.04.14 ubuntu

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https://bugs.launchpad.net/bugs/1796446

Title:
  grub crash on 18.04 install with mdadm

Status in grub-installer package in Ubuntu:
  New

Bug description:
  1. 18.04 LTS Startup USB Disk
  2. grub (not yet installed)
  3. Expect successful install of Ubuntu on new computer
  4. grup crashed on install

  New computer build.
  Installing 18.04 LTS desktop from USB.
  Configured 3 disk RAID 10 with mdadm prior to running Install.
  grub crashed roughly 70% through install.

  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
  Date: Fri Oct  5 21:54:57 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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