[Desktop] Xscreensaver does not detect when a video is playing

[greenster]

Xscreensaver doesn’t detect when a video is playing, even though I’ve enabled this setting in the Power Settings:




Is there a technical solution that would prevent Xscreensaver from activating the screensaver whilst videos are playing in Haruna or the Vivaldi browser (YouTube videos)?

[die.boer]

please post outputs of :

xscreensaver-command -version

ps aux | grep xscreensaver

loginctl show-session "$XDG_SESSION_ID" -p Type

echo $XDG_SESSION_TYPE

PS: if your on wayland ,xscreensaver won't work reliably/at all , ofcourse...

[greenster]

I use X11 instead of Wayland.

[die.boer]

please also post output of

xscreensaver-demo -version

or

apt policy xscreensaver

just copy/paste commands ,so there's no faulty spaces and stuff

then to post the output here , just select all in the terminal and copy then paste here
please don't show screenshots of the outputs

[greenster]

~$ xscreensaver-demo -version
Unbekannte Option -version
stephan@BlackSnake:~$ apt policy xscreensaver
xscreensaver:
Installiert: 6.08+dfsg1-1ubuntu5
Installationskandidat: 6.08+dfsg1-1ubuntu5
Versionstabelle:
*** 6.08+dfsg1-1ubuntu5 500
500 http://archive.ubuntu.com/ubuntu resolute/universe amd64 Packages
100 /var/lib/dpkg/status

[die.boer]

run this in terminal and leave it running

dbus-monitor "interface='org.freedesktop.ScreenSaver'"

Then:
Start playing a video in Haruna.
Stop it.
Play a YouTube video in Vivaldi.

If everything is working, you should see messages containing Inhibit when playback starts and UnInhibit when it ends.
If nothing appears at all, then the applications aren't requesting inhibition, which would explain why XScreenSaver activates.
Also , Are you using the Snap version of Vivaldi, the DEB package from Vivaldi's website, or the Flatpak?
check with

which vivaldi

or

apt policy vivaldi-stable

Likewise for Haruna:

apt policy haruna

or

flatpak list | grep -i haruna

Whether they're installed as native packages, Flatpaks, or Snaps can affect how idle inhibition is handled.

PS: like any command in terminal that keeps running , you can stop it with ctrl+c , in case you didn't know