[Bug 1794280] Re: gdm doesn't start on a fresh installation of Cosmic Desktop

[Xavier Guillot]

Hi,

I have the same problem since 3  weeks on a fresh install of Ubuntu
Cosmic, with Wayland session enabled by default : 2/3 of the time, login
screen doesn't appear and screen remains black, pushing power button
makes Ubuntu background visible again and computer stops.

I join some Auth.log since 17th September, here is an extract - will do
some further tests :

Session c1 logged out. Waiting for processes to exit.
Unregistered Authentication Agent for unix-session:c1 (system bus name :1.35, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale fr_FR.UTF-8) (disconnected from bus)
Removed session c1.
session closed for user gdm
session opened for user root by (uid=1000)
Executing command [USER=root] [TTY=unknown] [CWD=/home/valeryan24] [COMMAND=/usr/lib/update-notifier/package-system-locked]
Operator of unix-session:2 successfully authenticated as unix-user:valeryan24 to gain TEMPORARY authorization for action org.debian.apt.install-or-remove-packages for system-bus-name::1.336 [/usr/bin/python3 /usr/bin/update-manager --no-update --no-focus-on-map] (owned by unix-user:valeryan24)
asked to register item /org/freedesktop/secrets/collection/login/1, but it's already registered
[system] Failed to activate service 'org.bluez': timed out (service_start_timeout=25000ms)
Registered Authentication Agent for unix-session:2 (system bus name :1.190 [/usr/bin/gnome-shell], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale fr_FR.UTF-8)

New seat seat0.
pam_unix(gdm-launch-environment:session): session opened for user gdm by (uid=0)
New session c1 of user gdm.
session opened for user gdm by (uid=0)
gdm-launch-environment]: pam_unix(gdm-launch-environment:session): session closed for user gdm
Session c1 logged out. Waiting for processes to exit.
Removed session c1.
pam_unix(gdm-launch-environment:session): session opened for user gdm by (uid=0)
New session c2 of user gdm.
pam_systemd(gdm-launch-environment:session): Failed to create session: Start job for unit user-121.slice failed with 'canceled'
session closed for user gdm
session opened for user gdm by (uid=0)
pam_unix(gdm-launch-environment:session): session closed for user gdm
Session c2 logged out. Waiting for processes to exit.
Removed session c2.
systemd: pam_unix(systemd-user:session): session closed for user gdm
systemd-logind[815]: Power key pressed.
systemd-logind[815]: Powering Off...
systemd-logind[815]: System is powering down.

** Attachment added: "Auth.log"
   https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1794280/+attachment/5199069/+files/Auth.log

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https://bugs.launchpad.net/bugs/1794280

Title:
  gdm doesn't start on a fresh installation of Cosmic Desktop

Status in gdm3 package in Ubuntu:
  Won't Fix
Status in kmod package in Ubuntu:
  Invalid
Status in linux package in Ubuntu:
  Invalid
Status in xorg-server package in Ubuntu:
  Confirmed
Status in xserver-xorg-video-fbdev package in Ubuntu:
  Fix Released
Status in gdm3 source package in Cosmic:
  Won't Fix
Status in kmod source package in Cosmic:
  Invalid
Status in linux source package in Cosmic:
  Invalid
Status in xorg-server source package in Cosmic:
  Confirmed
Status in xserver-xorg-video-fbdev source package in Cosmic:
  Fix Released

Bug description:
  ubuntu cosmic desktop 20180925

  After installation gdm fails to start and there is only a black screen
  with a blinking cursor on the top left of the screen.

  gdm3 can be started manually from a tty

  When this issue happens there is a plymouth crash reported in bug
  1794292


  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: gdm3 3.30.0-0ubuntu2
  ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
  Uname: Linux 4.18.0-7-generic x86_64
  ApportVersion: 2.20.10-0ubuntu11
  Architecture: amd64
  Date: Tue Sep 25 13:54:45 2018
  InstallationDate: Installed on 2018-09-25 (0 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180925)
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: gdm3
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.gdm3.custom.conf: 2018-09-25T13:49:41.053012

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