light-locker locking does not work with suspending Xfce session

[Jarno Suni]

Ran sh -c 'light-locker-command --lock && xfce4-session-logout --suspend' from an Xfce panel launcher after starting 'light-locker --debug' in terminal.

Got black screen, but no suspend, no dialog after mouse move. After switching virtual console I see a dialog asking for administrative password claimed to be needed for suspending IIRC. Later I get error message dialog:
"Received error while trying to log out

GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Operation not permitted"

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: light-locker 1.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-83.106~14.04.1-generic 4.4.70
Uname: Linux 4.4.0-83-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.24
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Jul 9 17:35:24 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-09-21 (1022 days ago)
InstallationMedia: Ubuntu-Studio 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.1)
SourcePackage: light-locker
UpgradeStatus: No upgrade log present (probably fresh install)

[Jarno Suni (jarnos)]

In Xubuntu 16.04 the bug remains, but I get light-locker lockscreen where I have to give password.

[Theo Linkspfeifer (lastonestanding)]

This could be related to bug 1724196.

[Theo Linkspfeifer (lastonestanding)]

Does this work properly in 18.04? Furthermore, is running light-locker-command manually still needed in your use case?

[Jarno Suni (jarnos)]

Seems to work now in 16.04. I use different graphics card and driver now FWIIW.

[Jarno Suni (jarnos)]

Seems to work with 18.04, too.

[Theo Linkspfeifer (lastonestanding)]

Alright. I guess we can close this report then. Thanks.