Kubuntu missing screen lock and screen saver settings

Question

I am using Kubuntu 18.04.1 and I am unable to find where to set options for screen locking or screen saver.

Version of KDE framework:

Answer 1

Look at System Settings → Desktop Behavior.

Re. a screensaver, that's not included by default because modern screens aren't affected.

But, if you're interested, look at Where are the screensavers.

Answer 2

I have Kubuntu 18.04 - with nVidia drivers..

The problem is that there are TWO places where this is set.

In the setup tool, there is Workspace/Desktop Behavior/Screen Locking - where I can say "Lock screen automatically after:" then enter a time in minutes.

This does not work worth a damn. I can lock the screen manually - but not have it happen automatically.

However, hidden away under Hardware/Power Management/Energy Saving - there is "Screen Energy Saving" and "Switch off after"...which DOES work.

It's not quite the same thing though because it doesn't lock the screen - and it literally turns the video off rather than displaying a blank screen (or whatever) but for me, it's "good enough".

Screen savers no longer exist without you installing a bunch of extra stuff. So your lock screen (if you can get it to work) won't be any of the cool animations we used to have.

Answer 3

There are two settings. The screen locking and screen switch off.

If I want both locking and switch off, it is necessary to switch off the screen after screen locking. Otherwise the lock screen will wake up the screen, which leads to burn-in of the screen (more accurately, image persistence). What works for me is:

• Desktop Behavior → Screen Locking → Activation → Lock screen automatically after → 10 mins
• Power management → Energy Saving → Screen Energy Saving → Switch off after → 15 mins

This specific behavior may be influenced by my proprietary NVIDIA driver.

Answer 4

Actually you can find the screen locking on the Energy section of System Preferences.There you could choose the locking behavior and many more.

I hope you know that Ctrl+Alt+L locks the display window.

The screen saver option was answered by DK Bose.

Answer 5

In kUbuntu 20.04 look at System Settings → Screen Locking.

There is no System Settings → Desktop Behavior in my system.