Comment 13 for bug 1827751

This is a clean system - nothing but default packages. Streaming video in Firefox.
Happy to run commands to provide you what you need to know.

I do not know if I am using 'Wayland sessions' or not. bug 1740771 refers to 'screensaver' - I have not activated one and cannot locate settings for one on my system.

If I search for screensaver in Applications (Dock>Show applications) I see a few options avail that would require installation only.

I have toggled the Power settings again - will advise if this prevents blanking.