Public bug reported:
Since upgrading to 18.04 the screen lock no longer works. The screen
will not lock automatically despite the setting and even Ctrl+Alt+L and
Super+L fail to do anything.
I've checked that
$ gsettings get org.gnome.desktop.lockdown disable-lock-screen
false
I'm not sure if lightdm is the correct package. I'm using lightdm, since
gdm just gave me a black screen. But not sure which package should
handle the lock.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: lightdm 1.26.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.18.0-13.14~18.04.1-generic 4.18.17
Uname: Linux 4.18.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Jan 20 13:00:21 2019
InstallationDate: Installed on 2012-11-10 (2261 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: lightdm
UpgradeStatus: Upgraded to bionic on 2019-01-17 (2 days ago)
** Affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic third-party-packages wayland-session
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https://bugs.launchpad.net/bugs/1812556
Title:
Screen lock does not work
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