[Bug 1887776] Re: install of 20.04 from live USB with presistance for acer swift 5 i7 laptop dual boot with win10 failed at grub2 uefi

[george]

An update to the situation.

1.   I reconfirmed the valid checksum of the ISO file used - yep all
good.

2.   I erased and reformatted the USB used to restore the ISO file to, in the failed install.
     Note that it was a brand new 32GB device used in the first attempt.

3.   Restored the ISO file to this device and did not set it up for persistence.
     Just a straight bootable Live USB with Ubuntu 20.04.

4.   Booted from the USB and went straight to the install stage.
     Did not 'try' (or road test) the software (which I had previously).

5.   Selected the option to wipe the partially completed, failed
install.

6.   Magic happened, and the install worked successfully, as expected.
     Dual boot works as expected.

7.   I do not know where or what the initial problem may have been.
     Try Live with persistence?

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Title:
  install of 20.04 from live USB with presistance for acer swift 5 i7
  laptop  dual boot with win10  failed  at grub2 uefi

Status in grub-installer package in Ubuntu:
  New

Bug description:
  debug info sent automatically during failed install.

  excerpt from syslog:

  Jul 16 15:29:30 ubuntu /plugininstall.py: Exception during installation:
  Jul 16 15:29:30 ubuntu /plugininstall.py: Traceback (most recent call last):
  Jul 16 15:29:30 ubuntu /plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 1767, in <module>
  Jul 16 15:29:30 ubuntu /plugininstall.py:     install.run()
  Jul 16 15:29:30 ubuntu /plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 62, in wrapper
  Jul 16 15:29:30 ubuntu /plugininstall.py:     func(self)
  Jul 16 15:29:30 ubuntu /plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 233, in run
  Jul 16 15:29:30 ubuntu /plugininstall.py:     self.configure_bootloader()
  Jul 16 15:29:30 ubuntu /plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 929, in configure_bootloader
  Jul 16 15:29:30 ubuntu /plugininstall.py:     raise install_misc.InstallStepError(
  Jul 16 15:29:30 ubuntu /plugininstall.py: ubiquity.install_misc.InstallStepError: GrubInstaller failed with code 1
  Jul 16 15:29:30 ubuntu /plugininstall.py: 
  Jul 16 15:29:41 ubuntu systemd[1]: zsysd.service: Succeeded.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.15.1
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckMismatches: ./boot/grub/efi.img ./boot/grub/grub.cfg ./boot/grub/loopback.cfg
  CasperMD5CheckResult: fail
  CasperVersion: 1.445
  Date: Thu Jul 16 15:30:01 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity persistent ---
  LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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