[Bug 1548864] Re: Ubuntu GNOME Xenial live image boots to tty1

[Tim]

so what should happen on an installed system, is that gdm will stop
plymouth but leave the splash up on the screen (animation stops), Then
there should be a seamless transition to Xorg or wayland, though perhaps
wayland doesnt yet support that, however its also not installed by
default.

The live session is slightly different in that is uses ubiquity-dm to
launch the greeter, but I think it has all the same logic as gdm.

There is a plymouth-quit service that shouldnt run atleast when using
gdm, but if it did would cause the spash to disappear, you could try

systemctl disable plymouth-quit.service
sytemctl mask plymouth-quit.service

and see if that helps (undo changes using enable/unmask commands)

Alternatively it could be a driver specific Xorg bug, not handling the
background transition properly

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https://bugs.launchpad.net/bugs/1548864

Title:
  Ubuntu GNOME Xenial live image boots to tty1

Status in casper package in Ubuntu:
  Incomplete

Bug description:
  Testing Ubuntu GNOME Xenial 20160222.1 amd64 and I find that selecting
  Try Ubuntu GNOME from the standard boot menu displays TTY 1 and
  requests a username but the keyboard appears to enter no text. It will
  however eventually boot to the login screen. After several tries I
  find the following steps reproduce the behavior:

  (1) Boot Ubuntu GNOME Xenial live image, wait for the standard boot menu to appear, and select Try Ubuntu GNOME.
  (2) You'll find that the screen displays TTY1 + requesting a user name.
  (3) Do nothing and wait 2 to 3 minutes after which a GUI login screen appears.
  (4) Click on Live session user and a new screen appears requesting a password.
  (5) Enter nothing and press Enter and you'll finally get to the live desktop.

  I was going to upload some pics of what happens but I'm unable to
  mount my camera in the live session.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: casper 1.367
  ProcVersionSignature: Ubuntu 4.4.0-6.21-generic 4.4.1
  Uname: Linux 4.4.0-6-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  CasperVersion: 1.367
  CurrentDesktop: GNOME
  Date: Tue Feb 23 14:58:37 2016
  LiveMediaBuild: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160222.1)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: casper
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.casper.conf: 2016-02-23T14:53:15.379536

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