[Bug 1939657] Re: install crashes

[Chris Guiver]

Thank you for taking the time to report this issue and helping to make
Ubuntu better.

This package failure looks like it was caused by bad ISO download,
corrupted install media, or device failure. eg. look in the logs and
you'll see messages like these :-

Aug 12 07:24:43 ubuntu kernel: [  242.141151] SQUASHFS error: zlib decompression failed, data probably corrupt
Aug 12 07:24:43 ubuntu kernel: [  242.141158] SQUASHFS error: squashfs_read_data failed to read block 0x2d7e90fe
Aug 12 07:24:43 ubuntu kernel: [  242.141424] SQUASHFS error: zlib decompression failed, data probably corrupt
Aug 12 07:24:43 ubuntu kernel: [  242.141427] SQUASHFS error: squashfs_read_data failed to read block 0x2d7e90fe

Examining the information it appears to be a bad ISO or faulty device
(inc. bad write-to-device). The bot reply refers to CD/DVD which refers
to whatever media you installed from (ie. applies even if using
HDD/SSD/thumb-drive/flash-memory-card/CD/DVD). I suggest you verify your
ISO download, and validate the write of ISO to install media before
trying to install.

Possibly useful:
- https://tutorials.ubuntu.com/tutorial/tutorial-how-to-verify-ubuntu#0
- https://help.ubuntu.com/community/Installation/CDIntegrityCheck

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https://bugs.launchpad.net/bugs/1939657

Title:
  install crashes

Status in ubiquity package in Ubuntu:
  Incomplete

Bug description:
  crashes midway of install

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14.6
  ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
  Uname: Linux 4.15.0-29-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  CasperVersion: 1.394
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Aug 12 00:25:00 2021
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  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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