** Description changed:
- When I lock my machine, the login screen shows my current user with the
- message: "Authentication Failure"
+ [Impact]
- ..and in the position when the password normally exists, the option
- "Switch to greeter..."
+ After locking, the login screen shows the message "Authentication
+ Failure" and the user must click "Switch to greeter" to continue.
+
+ This SRU fixes the regression introduced in 44e6022, which causes the
+ lock screen to start failing when session switching is involved. This
+ can happen when you unlock the session from LightDM or from the CLI. We
+ need to cancel the authentication in order to ensure that the next one
+ does not fail.
+
+ [Test Case]
+
+ On a system with LightDM and more than one local user ("bob" and "alice"):
+ 1. Login under bob.
+ 2. Via upper-right menu switch to "alice".
+ 3. On greeter screen select "alice", login under alice.
+ 4. Logout, return to greeter screen.
+ 5. Select bob (already logged in). Enter password.
+ 6. Lock screen.
+
+ [Other Info]
This happens mostly after switching user sessions.
Syslog contains entries like:
Jan 6 17:15:42 eugene-Lenovo-Flex-2-14 compiz[1877]: WARN 2018-01-06 17:15:42
unity.lockscreen UserPromptView.cpp:500 Failed to start the authentication
process. Retrying for 2 time.
-
-
- ProblemType: Bug
- DistroRelease: Ubuntu 17.10
- Package: gnome-control-center 1:3.26.1-0ubuntu5
- ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
- Uname: Linux 4.13.0-16-generic x86_64
- ApportVersion: 2.20.7-0ubuntu3.5
- Architecture: amd64
- CurrentDesktop: Unity:Unity7:ubuntu
- Date: Tue Nov 21 10:28:47 2017
- InstallationDate: Installed on 2017-04-17 (217 days ago)
- InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
- ProcEnviron:
- LANGUAGE=en_GB:en
- PATH=(custom, no user)
- XDG_RUNTIME_DIR=<set>
- LANG=en_GB.UTF-8
- SHELL=/bin/bash
- SourcePackage: gnome-control-center
- UpgradeStatus: Upgraded to artful on 2017-10-23 (29 days ago)
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https://bugs.launchpad.net/bugs/1733557
Title:
Login screen showing Authentication Failure Switch to greeter...
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