Public bug reported:
I've seen this on Fedora (GDM+gnome-shell) in the past (can't remember
how I fixed it, or if it just went away one day with an OS upgrade).
Recently upgraded from Ubuntu 16.04.4 to 17.04, and this issue is
present here now as well.
My setup:
* dual monitors
* multiple local users
* often 2x users logged in at same time
* flip between them using PTY (CTRL+ALT+ F2, F3, etc.)
* CTRL+ALT+F1 gets us to the gdm login screen (user selection)
What happens:
* eventually either by timeout (or after suspend), or manual lock screen
* user hits CTRL+ALT+F2,3,X, to access their PTY
* screen is locked
* login screen is presented with user, password entry and cancel/unlock
* the screen is _already_ saying "Authentication Failed" over and over and
over (orange text)
* if the user tries to enter their password, it "cuts them off" too fast, and
they can't even complete entry! - my password is in fact so long >16chars, it's
seemingly not humanly possible to enter it within the short ~500ms window
between resets...
Reproducibility:
* uncertain exactly how/when it starts
* after multiple PTY switches maybe
* perhaps related to sending the system into sleep S3 and resuming
* sometimes I use the proper gnome-shell "switch user" functionality
Issue Analysis:
* none - need guidance on how to debug/isolate next time it happens
---
System Information:
$ lsb_release -rd
Description: Ubuntu 17.04
Release: 17.04
$ uname -a
Linux fermmy 4.10.0-42-generic #46-Ubuntu SMP Mon Dec 4 14:38:01 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
$ apt-cache policy gdm3
gdm3:
Installed: 3.24.1-0ubuntu0.2
Candidate: 3.24.1-0ubuntu0.2
Version table:
*** 3.24.1-0ubuntu0.2 500
500 http://ca.archive.ubuntu.com/ubuntu zesty-updates/universe amd64
Packages
500 http://security.ubuntu.com/ubuntu zesty-security/universe amd64
Packages
100 /var/lib/dpkg/status
3.24.0-0ubuntu2 500
500 http://ca.archive.ubuntu.com/ubuntu zesty/universe amd64 Packages
$ apt-cache policy gnome-shell
gnome-shell:
Installed: 3.24.2-0ubuntu0.1
Candidate: 3.24.2-0ubuntu0.1
Version table:
*** 3.24.2-0ubuntu0.1 500
500 http://ca.archive.ubuntu.com/ubuntu zesty-updates/universe amd64
Packages
100 /var/lib/dpkg/status
3.24.0-0ubuntu2 500
500 http://ca.archive.ubuntu.com/ubuntu zesty/universe amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: gdm3 3.24.1-0ubuntu0.2
ProcVersionSignature: Ubuntu 4.10.0-42.46-generic 4.10.17
Uname: Linux 4.10.0-42-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.10
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Jan 5 12:24:06 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-05-11 (1700 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64
(20130213)
SourcePackage: gdm3
UpgradeStatus: Upgraded to zesty on 2017-12-30 (6 days ago)
mtime.conffile..etc.gdm3.custom.conf: 2018-01-02T23:13:17.149142
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug third-party-packages zesty
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1741511
Title:
GDM3 display manager: logon constantly trying to "press enter" -
unable to login using PTY
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https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1741511/+subscriptions
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