[Bug 1841957] Re: The system installed from Ubuntu-MATE 20190829.1 ISO has GNOME Shell and GDM3 as default

[Martin Wimpress]

Fixed via ubuntu-mate-meta 1.249.

xinit was pulling in gnome-terminal, Adding xterm to the Ubuntu MATE
seeds and rebuilding ubuntu-mate-meta has resolved the issue.

I don't actually understand why though, because xinit has `Recommends:
xserver-xorg | xserver, gnome-terminal | xterm | x-session-manager | x
-window-manager | x-terminal-emulator`

  * mate-session-manager provides x-session-manager
  * marco (MATE Window manager) provides x-window-manager
  * mate-terminal provides x-terminal-emulator

So why did seeding xterm fix this?

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https://bugs.launchpad.net/bugs/1841957

Title:
  The system installed from Ubuntu-MATE 20190829.1 ISO has GNOME Shell
  and GDM3 as default

Status in ubiquity package in Ubuntu:
  Invalid
Status in ubuntu-mate-meta package in Ubuntu:
  Confirmed
Status in update-notifier package in Ubuntu:
  Invalid

Bug description:
  Steps to reproduce:
  1. Download Ubuntu-MATE 20190829.1 daily ISO (http://cdimage.ubuntu.com/ubuntu-mate/daily-live/20190829.1/eoan-desktop-amd64.iso, MD5 199cb3158ddf4b5ad7f4c24f9a3a888d)
  2. Boot ISO with default settings
  3. Find Install Ubuntu launcher and start it, wait installation to finish

  Expected result:
  * freshly installed system has lightdm and MATE session

  Actual result:
  * freshly installed system has GDM3 and GNOME Shell sessions.
  * GDM3 is set to default.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 5.2.0-13.14-generic 5.2.8
  Uname: Linux 5.2.0-13-generic x86_64
  ApportVersion: 2.20.11-0ubuntu7
  Architecture: amd64
  CurrentDesktop: MATE
  Date: Thu Aug 29 18:29:39 2019
  InstallCmdLine: file=/cdrom/preseed/ubuntu-mate.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
  InstallationDate: Installed on 2019-08-29 (0 days ago)
  InstallationMedia: Ubuntu-MATE 19.10 "Eoan Ermine" - Alpha amd64 (20190829.1)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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