[Bug 1842425] [NEW] No GUI with Gnome Flashback or Classic after apt dist-upgrade; Ubuntu on Wayland OK

[David A. Kra]

Public bug reported:

Did apt dist-upgrade .
I usually use Gnome Flashback.
Now rebooting with 5.0.0.27  or 5.0.25 and logging in at GUI screen only works for "Ubuntu on Wayland". 
Other attempts:
 (1) Flashback: login transitions to purple background screen and no mouse. hitting alt-ctrl-F1 leads to an unlock screen with a next button. entering pw and clicking NEXT leads to animated circle wait icon. alt-ctrl-f2 leads to a TTY2 text mode console login screen. Login and sudo shutdown now -r

 (2) Gnome Classic: login transitions to a blank screen with the LCD
displaying a "No video" message. alt-ctrl-f1 and unlocking there also
transitions to a blank screen with the LCD displaying a "No video"
message. alt-ctrl-f3 then Login and sudo shutdown now -r.

 (3) Ubuntu: same as with Gnome Classic.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-flashback 3.28.0-1ubuntu1.4
ProcVersionSignature: Ubuntu 5.0.0-25.26~18.04.1-generic 5.0.18
Uname: Linux 5.0.0-25-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep  3 15:17:32 2019
InstallationDate: Installed on 2018-07-27 (403 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: gnome-flashback
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-flashback (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic wayland-session

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https://bugs.launchpad.net/bugs/1842425

Title:
  No GUI with Gnome Flashback or Classic after apt dist-upgrade; Ubuntu
  on Wayland OK

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