[Bug 1766871] [NEW] I keep getting this error when trying to install Ubuntu

[Carlton Hill]

Public bug reported:

this error always occurs unless I install from the UEFI boot usb

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63.6 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.13.0-36.40~16.04.1-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CasperVersion: 1.376.2
Date: Wed Apr 25 22:50:11 2018
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
ProcEnviron:
 LANGUAGE=en_AU.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug ubiquity-2.21.63.6 ubuntu xenial

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https://bugs.launchpad.net/bugs/1766871

Title:
  I keep getting this error when trying to install Ubuntu

Status in grub-installer package in Ubuntu:
  New

Bug description:
  this error always occurs unless I install from the UEFI boot usb

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubiquity 2.21.63.6 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 4.13.0-36.40~16.04.1-generic 4.13.13
  Uname: Linux 4.13.0-36-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.15
  Architecture: amd64
  CasperVersion: 1.376.2
  Date: Wed Apr 25 22:50:11 2018
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
  LiveMediaBuild: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
  ProcEnviron:
   LANGUAGE=en_AU.UTF-8
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_AU.UTF-8
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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