After locking my screen and trying to log in, here's what I see in the
log corresponding to a delay in the login prompt being shown.

I have not configured fingerprint authentication and never will, so I
don't know why this is spawned or failing to spawn.

$ journalctl -b0 --since '2019-04-23 12:18' --no-pager
-- Logs begin at Sat 2019-02-02 22:33:11 PST, end at Tue 2019-04-23 12:19:26 
PDT. --
Apr 23 12:18:41 virgil gnome-shell[4982]: JS WARNING: 
[resource:///org/gnome/gjs/modules/signals.js 128]: Too many arguments to 
method Clutter.Actor.destroy: expected 0, got 1
Apr 23 12:18:45 virgil dbus-daemon[2096]: [system] Activating via systemd: 
service name='net.reactivated.Fprint' unit='fprintd.service' requested by 
':1.360' (uid=1000 pid=4982 comm="/usr/bin/gnome-shell " label="unconfined")
Apr 23 12:18:45 virgil systemd[1]: Starting Fingerprint Authentication Daemon...
Apr 23 12:19:10 virgil dbus-daemon[2096]: [system] Failed to activate service 
'net.reactivated.Fprint': timed out (service_start_timeout=25000ms)
Apr 23 12:19:10 virgil gnome-shell[4982]: Failed to connect to Fprint service: 
Error calling StartServiceByName for net.reactivated.Fprint: 
GDBus.Error:org.freedesktop.DBus.Error.TimedOut: Failed to activate service 
'net.reactivated.Fprint': timed out (service_start_timeout=25000ms)
Apr 23 12:19:12 virgil gdm-password][23487]: pam_krb5(gdm-password:auth): user 
vorlon authenticated as [REDACTED]
Apr 23 12:19:12 virgil gdm-password][23487]: gkr-pam: unlocked login keyring
Apr 23 12:19:13 virgil NetworkManager[2098]: <info>  [1556047153.6710] 
agent-manager: req[0x55dda12f3ae0, :1.360/org.gnome.Shell.NetworkAgent/1000]: 
agent registered
Apr 23 12:19:13 virgil /usr/lib/gdm3/gdm-x-session[4767]: dbus-daemon[4783]: 
[session uid=1000 pid=4783] Activating service name='org.gnome.Nautilus' 
requested by ':1.26' (uid=1000 pid=4982 comm="/usr/bin/gnome-shell " 
label="unconfined")
Apr 23 12:19:13 virgil /usr/lib/gdm3/gdm-x-session[4767]: dbus-daemon[4783]: 
[session uid=1000 pid=4783] Activating service 
name='org.freedesktop.FileManager1' requested by ':1.26' (uid=1000 pid=4982 
comm="/usr/bin/gnome-shell " label="unconfined")
Apr 23 12:19:14 virgil /usr/lib/gdm3/gdm-x-session[4767]: dbus-daemon[4783]: 
[session uid=1000 pid=4783] Successfully activated service 'org.gnome.Nautilus'
Apr 23 12:19:14 virgil /usr/lib/gdm3/gdm-x-session[4767]: Failed to register: 
Unable to acquire bus name 'org.gnome.Nautilus'
Apr 23 12:19:14 virgil /usr/lib/gdm3/gdm-x-session[4767]: dbus-daemon[4783]: 
[session uid=1000 pid=4783] Activated service 'org.freedesktop.FileManager1' 
failed: Process org.freedesktop.FileManager1 exited with status 1
Apr 23 12:19:18 virgil gnome-shell[4982]: Couldn’t parse steam.desktop as a 
desktop file, will treat it as a regular file.
Apr 23 12:19:18 virgil gnome-shell[4982]: Error connecting to Nautilus
Apr 23 12:19:19 virgil gnome-shell[4982]: [AppIndicatorSupport-DEBUG] Using 
Brute-force mode for StatusNotifierItem 
:1.83/org/ayatana/NotificationItem/software_update_available
Apr 23 12:19:19 virgil gnome-shell[4982]: [AppIndicatorSupport-DEBUG] 
Registering StatusNotifierItem 
:1.83/org/ayatana/NotificationItem/software_update_available
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 31 with keysym 31 (keycode a).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 32 with keysym 32 (keycode b).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 33 with keysym 33 (keycode c).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 34 with keysym 34 (keycode d).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 35 with keysym 35 (keycode e).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 38 with keysym 38 (keycode 11).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 39 with keysym 39 (keycode 12).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 36 with keysym 36 (keycode f).
Apr 23 12:19:23 virgil org.gnome.Shell.desktop[4982]: Window manager warning: 
Overwriting existing binding of keysym 37 with keysym 37 (keycode 10).


** Changed in: gdm3 (Ubuntu)
       Status: Incomplete => Opinion

** Changed in: gdm3 (Ubuntu)
       Status: Opinion => New

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gdm3 in Ubuntu.
https://bugs.launchpad.net/bugs/1824855

Title:
  very long delay to display login prompt if there are a large number of
  uncleared desktop notifications

Status in gdm3 package in Ubuntu:
  New

Bug description:
  When waking my laptop screen up at the lock screen, it takes a very
  long time to display the password prompt (definitely longer than 30s,
  possibly longer than 1m - I didn't time it).  I notice that while
  waiting for the password prompt, the screen is showing a full list of
  (obfuscated) desktop notifications.  After logging in, I used the
  gnome-shell interface to clear the notifications; then I locked my
  screen again, at which point hitting the space bar caused the password
  prompt to show up immediately.

  So it looks like the time to display the password prompt might scale
  linearly with the number of notifications; which is not useful,
  because there is a finite number of (obfuscated!) notifications that
  will be displayed on the lock screen, and AFAIK you can't interact
  with them through the lock screen at all.  So we shouldn't be wasting
  time processing (and presumably rendering) notifications that will
  never be visible.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: gdm3 3.32.0-1ubuntu1
  ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1
  Uname: Linux 5.0.0-8-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Apr 15 09:58:23 2019
  InstallationDate: Installed on 2010-09-24 (3125 days ago)
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 
(20100816.1)
  SourcePackage: gdm3
  UpgradeStatus: Upgraded to disco on 2019-04-11 (3 days ago)

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