I managed to install Xcreensaver in Kubuntu 25.10.
I set up Xcreensaver to start automatically.
Xcreensaver starts after login and displays this window.
I am supposed to start display “:0.” But how can I get XScreensaver to do this automatically and start minimized when Kubuntu starts?
These errors are displayed in the Xcreensaver autostart:
In Wayland, I can’t use xscreensaver-demo or xscreen-setup (in X11 session yes). But I can use xscreensaver.
And I have assigned a shortcut in Alt+S:
with my sharks:
Operating System: openSUSE Tumbleweed 20260131
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.18.7-1-default (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-6600K CPU @ 3.50GHz
Memory: 32 GiB of RAM (31.3 GiB usable)
Graphics Processor: NVIDIA GeForce GTX 1070
Regards
I use the Plasma (X11) workspace session on Kubuntu 25.10.
My log in autostart, if you seen, is full of Failed (as you have in X11)
This, load the xscreensaver demon. Only type xscreensaver:
You tried to do my shortcut (with your custom keys) and see if works? In konsole, you can type xscreensaver-command -activate and see if works before do the shortcut.
Regards
Yes, I was able to set a keyboard shortcut for Xscreensaver.
But that’s not my problem.
I want Xscreensaver to start automatically after logging into Kubuntu.
And you gone to start automatically and followed the arrows to add xscreensaver (without sh, sleep, etc)?
Regards
Finally… yes, that was the right tip!!! At the moment I had to say “xscreensaver-setitngs” instead of “xscreensaver” at autostart. Thank you for your professional help. Now the Xscreensaver works very well! 
By the way…I also use Xscreensaver with Windows 11. Although Xscreensaver for Windows was last updated in 2015, it still works flawlessly in Windows.
