It may be considered a bug in Totem, actually. Is it OK for it to ask D-Bus to launch the Gnome screensaver in the first place, while not running in a Gnome session?
+Bastien Nocera, what do you think[1]? [1] https://gitlab.gnome.org/GNOME/totem/commit/336154c47dc415299e54b260c5438def6afd6f8b -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to totem in Ubuntu. https://bugs.launchpad.net/bugs/1803078 Title: Screensaver unlock screen shown twice after playing video Status in cinnamon-session package in Ubuntu: New Status in totem package in Ubuntu: New Bug description: Observed behaviour: resuming from screensaver, after unlocking the screen with a password, the desktop is shown briefly and is immediately locked again, but with a different look-and-feel lock screen. Entering the password once more will finally show the desktop. This started happening seemingly sporadically, and would continue to happen consistently until end of session (logout or shutdown). Digging further, it was found that a `gnome-screensaver` process was running in addition to the normal `cinnamon-screensaver`. It was a child process of `systemd --user`, so a `ps -o pid,comm,cgroup` found that it was running as part of `dbus.service`. Finally, the culprit was found in the journal for that unit (`dbus.service`): Nov 12 15:03:40 laptop dbus-daemon[1696]: [session uid=1000 pid=1696] Activating service name='org.gnome.ScreenSaver' requested by ':1.206' (uid=1000 pid=3445 comm="/usr/bin/totem --gapplication-service " label="unconfined") So, the workaround (which I am quite happy with, frankly) is to use VLC instead of Totem. ☺ ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: cinnamon-session 3.6.1-1 ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18 Uname: Linux 4.15.0-38-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 CurrentDesktop: X-Cinnamon Date: Tue Nov 13 08:56:37 2018 InstallationDate: Installed on 2018-10-31 (12 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) SourcePackage: cinnamon-session UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cinnamon-session/+bug/1803078/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp