[Bug 1886101] Re: installing ubuntu 20 lts over centos 7 caused installation crash

[Ubuntu Foundations Team Bug Bot]

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Ubuntu better.  Reviewing your log files attached to this bug report it
seems that there is a problem with your installation media (CD/DVD).
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following the instructions at
https://help.ubuntu.com/community/HowToMD5SUM.  You might also retry
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** Changed in: ubiquity (Ubuntu)
       Status: New => Incomplete

** Tags added: ident-mismatch

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https://bugs.launchpad.net/bugs/1886101

Title:
  installing ubuntu 20 lts over centos 7 caused installation crash

Status in ubiquity package in Ubuntu:
  Incomplete

Bug description:
  I did not like the install of CentOS 7 I just completed. 
  I went to install Ubuntu 20 LTS over it on my laptop.
  During the install I had a crash of the ubiquity package.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.15
  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: ./casper/filesystem.squashfs
  CasperMD5CheckResult: fail
  CasperVersion: 1.445
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Jul  2 15:56:28 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  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: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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