[Bug 1868191] Re: Unchecking all optional media apps, install fails

[MarkF]

IMPORTANT: this bug-report DIFFERS FROM #1851346 in one important way:
The INSTALLER FAILS, not merely goes slow.

ALSO, it DOESN'T MERELY FAIL. It (essentially) FAILS WITHOUT NOTICE
(unless the user is watching the the entire (and now-slow installation).
If they return from doing something else, everything will look fine (to
the uninitiated). When they reboot, they will be presented with a
COMMAND-LINE LOGIN PROMPT without any context about why that might be.

Personally, I would not call this a duplicate. But, the other bug report
has been duly updated to keep this info alive.

** This bug is no longer a duplicate of bug 1851346
   Ubuntu Studio 19.10 Installer Causes Wanted Programs to be Removed

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https://bugs.launchpad.net/bugs/1868191

Title:
  Unchecking all optional media apps, install fails

Status in ubiquity package in Ubuntu:
  New

Bug description:
  ISO testing 20.04 Studio's daily image (20200319). A screen appears
  with about a dozen various media/photography apps which are
  checkmarked. I am invited to uncheck any or all. I unchecked all. The
  install fails near the end. There is an "oopsie" msg which disappears,
  and the installation ends. When I reboot, I'm dropped at a command-
  line login.

  I saw this with yesterday's daily image too. But, I haven't tried this
  before. It could have always been this way.

  FWIW: unchecking all those media apps results in the installation
  taking 3-4 times longer. I expected it to install very fast. It never
  does complete. The progress bar is about 4/5ths of the way to the
  right edge, and then the oopsie msg occurs. I Ubuiquity disappears
  after that. It seems to be removing packages for a long time when this
  happens.

  Maybe nobody would ever uncheck all. It's probably not an important
  problem. I just wanted to bring it to someone's attention.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.6
  ProcVersionSignature: Ubuntu 5.4.0-18.22-lowlatency 5.4.24
  Uname: Linux 5.4.0-18-lowlatency x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu20
  Architecture: amd64
  CasperVersion: 1.441
  CurrentDesktop: XFCE
  Date: Fri Mar 20 01:23:11 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntustudio.seed quiet splash ---
  LiveMediaBuild: Ubuntu-Studio 20.04 LTS "Focal Fossa" - Alpha amd64 (20200319)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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