We don't need any more logs as this bug is fully understood.

Although it sounds like you might now be experiencing bug 1795760. Also
there are other related bugs to that like bug 1790525 or bug 1795774.
Plus there is the original bug 1727356. Those last three are all fixed
in 19.04 so please don't use 18.04 any more - it doesn't have enough
fixes for your hardware.

The other bug you are experiencing is bug 1760849. So the unresolved
bugs you are experiencing in 19.04 are bug 1812359, bug 1760849 and
maybe 1795760.

But to avoid confusion we should really only talk about bug 1812359
here. And you should only use Ubuntu 19.04 because 18.04 contains a
little too many of those bugs.

If you would like to speed up the resolution of this problem (bug
1812359) then please follow the steps in comment #81.

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https://bugs.launchpad.net/bugs/1812359

Title:
  No login screen displayed on a NETBOX nT-435/535 (kernel reports an
  LVDS output which does not exist as connected and on)

Status in linux package in Ubuntu:
  Triaged

Bug description:
  On a machine with only one display (VGA), the kernel is reporting two:

  grep . /sys/class/drm/*/enabled

     /sys/class/drm/card0-LVDS-1/enabled:enabled
     /sys/class/drm/card0-VGA-1/enabled:enabled

  ls /sys/class/drm

     card0 card0-LVDS-1 card0-VGA-1 renderD128 version

  grep . /sys/class/drm/*/dpms

     /sys/class/drm/card0-LVDS-1/dpms:On
     /sys/class/drm/card0-VGA-1/dpms:On

  which then triggers bug 1760849 and the login screen is never visible.

  ---

  $ dpkg -s mutter
  Package: mutter
  Status: install ok installed
  Priority: optional
  Section: x11
  Installed-Size: 101
  Maintainer: Ubuntu Developers <ubuntu-devel-disc...@lists.ubuntu.com>
  Architecture: amd64
  Version: 3.28.3-2~ubuntu18.04.2
  Provides: x-window-manager
  Depends: libc6 (>= 2.4), libglib2.0-0 (>= 2.53.2), libmutter-2-0 (>= 3.28.2), 
libx11-6, libxcomposite1 (>= 1:0.3-1), mutter-common (>= 
3.28.3-2~ubuntu18.04.2), gnome-settings-daemon, gsettings-desktop-schemas (>= 
3.21.4), zenity
  Suggests: gnome-control-center (>= 1:3.25.2), xdg-user-dirs
  Description: lightweight GTK+ window manager
   Mutter is a small window manager, using GTK+ and Clutter to do
   everything.
   .
   Mutter is the clutter-based evolution of Metacity, which, as the
   author says, is a "Boring window manager for the adult in you. Many
   window managers are like Marshmallow Froot Loops; Metacity is like
   Cheerios."
   .
   This package contains the core binaries.
  Original-Maintainer: Debian GNOME Maintainers 
<pkg-gnome-maintain...@lists.alioth.debian.org>

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: mutter 3.28.3-2~ubuntu18.04.2
  ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
  Uname: Linux 4.15.0-43-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Jan 18 15:02:22 2019
  InstallationDate: Installed on 2019-01-18 (0 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_IN
   SHELL=/bin/bash
  SourcePackage: mutter
  UpgradeStatus: No upgrade log present (probably fresh install)

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