Public bug reported:

After a recent install of the 18.04 (why is a separate story), I notice
that after some number of successful screen locks, I become locked out
of the desktop with an authentication failure.  During those
unsuccessful attempts to log in, syslog shows:

Mar 13 22:46:04 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "21"
Mar 13 22:46:04 magpie kernel: [83554.367969] rfkill: input handler enabled
Mar 13 22:46:04 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event2  - Power B
utton: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "25"
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event4  - Video B
us: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "27"
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event1  - Sleep B
utton: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "24"
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event17 - Integra
ted Camera: Integrated C: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "29"
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event3  - AT Tran
slated Set 2 keyboard: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "28"
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event5  - 
SynPS/2 Synaptics TouchPad: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "30"
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event6  - TPPS/2 
IBM TrackPoint: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (**) Option "fd" "62"
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) event7  - 
ThinkPad Extra Buttons: device removed
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) AIGLX: 
Suspending AIGLX clients for VT switch
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) systemd-logind: 
got pause for 13:81
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) systemd-logind: 
got pause for 13:68
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) systemd-logind: 
got pause for 226:0
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) systemd-logind: 
got pause for 13:71
Mar 13 22:46:05 magpie /usr/lib/gdm3/gdm-x-session[1340]: (II) systemd-logind: 
got pause for 13:66

one new line for each attempted log in.  This is occurring once or twice
a day.  Sometimes, it works again.  Last time, I needed to reboot.

Since this is a fresh install, albeit with my desktop files being
restored via CrashPlan (which could be part of the problem?), I thought
that this warranted a report.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gdm3 3.27.92-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 14 07:58:11 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-03-12 (1 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180114)
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gdm3 (Ubuntu)
     Importance: Undecided
         Status: New


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

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https://bugs.launchpad.net/bugs/1755800

Title:
  Greeter/lockscreen fails to authenicate in an endless loop

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