Public bug reported:

I use KDE, but every so often I find gnome-screensaver running, not
immediately after starting a session but after some time and activity.
If I kill the gnome-screensaver process it goes away for a while, but
starts up again some time later.  As a result, I have a screensaver
running which doesn't respond to the KDE screensaver configuration.

I discovered that some applications cause gnome-screensaver to start
during a KDE session.  Two examples are totem and neverball and I expect
there are more.  I suspect that these applications attempt to
temporarily disable the screensaver in a way which causes gnome-
screensaver to start.

For example:

neil@eagle:~$ pidof gnome-screensaver
neil@eagle:~$ totem & 
[1] 8776
neil@eagle:~$ Gtk-Message: Failed to load module "overlay-scrollbar"

neil@eagle:~$ pidof gnome-screensaver
8787
neil@eagle:~$ 

I think gnome-screensaver should not become active due to an application
attempting to suspend/resume screensaver activity, even if it is using a
gnome-screensaver specific interface.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-screensaver 3.6.1-7ubuntu4
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Dec 30 16:40:15 2016
EcryptfsInUse: Yes
GnomeSessionIdleInhibited: Unknown
GnomeSessionInhibitors: Failed to acquire
GsettingsGnomeSession:
 org.gnome.desktop.session session-name 'ubuntu'
 org.gnome.desktop.session idle-delay uint32 300
InstallationDate: Installed on 2013-08-13 (1234 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 
(20130213)
SourcePackage: gnome-screensaver
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-screensaver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1653264

Title:
  gnome-screensaver starts within a KDE session

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