Desktop temporarily visible on resume from suspend

[Caleb Bradley]

Steps to reproduce:

1. Set laptop to sleep when lid closed in XFCE Power Manager.
2. Close lid. System sleeps.
3. Open lid. Desktop contents remain visible for 3-4 seconds before system goes to lock screen (huge security problem IMO but also just annoying)

This problem only shows itself when suspending the laptop upon lid close. Selecting suspend from the menu or issuing "systemctl suspend" works properly.

Please see the top rated reply to this question:
https://askubuntu.com/questions/1383379/xubuntu-desktop-visible-after-suspend-before-lock-screen

I performed these steps to build the xfce4-settings package from source and it completely fixed the problem. According to the solution poster, the feature removed at compile time is not even implemented in XFCE any more, so it seems like this should be easy to fix.

Thank you for your time. Would be good to put a long-standing bug to rest.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xfce4-settings 4.16.2-1ubuntu2
ProcVersionSignature: Ubuntu 5.15.0-46.49-generic 5.15.39
Uname: Linux 5.15.0-46-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: XFCE
Date: Mon Sep 5 02:05:14 2022
InstallationDate: Installed on 2021-09-20 (349 days ago)
InstallationMedia: Ubuntu-MATE 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819.1)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xfce4-settings
UpgradeStatus: Upgraded to jammy on 2022-08-23 (12 days ago)