My screen blanks after inactivity of 40 seconds. Have done the usual settings selections with no satisfaction:
system settings |energy saving |on ac power |dim screen, unchecked; screen energy saving, unchecked;
system settings |activity settings |define a special behavior |never shutdown the screen, checked
Reboot after such settings makes no difference.

Tried the cli:
xset -dpms; xset s off
xset s noblank -dpms

Installed java jar program called wigglemouse-2.6.1, invoked with 30 second intervals, also with no luck.

Am an intermediate linux user and _loving_ this desktop:
linux 4.4.0-38; kde neon, plasma 5.7.5;

Noticed that there is no blanking until after I've interacted with the de.

OK, I see more than two three dozen have glanced at this without a comment. No mention of a fix, nor anyone with a similar issue. I'm glad there isn't anyone having this trouble. It is not a deal killer, but quite a niggling little quirk all the same.

Is the community likely less interested than neon developers appear to be? How is this to be taken?

Update: This continues to be an issue after having upgraded to plasma 5.8. Meh!
But does this look damn good all the same. Thanks team!

This anxious crowd is just dying to lend a helping hand... one can just sense they're seething with empathy. Could someone just say hello?

Community. . . ¡Humbug!

I am running Kubuntu 16.10 and I am having the same problem after I upgraded to plasma 5.8. I Just can't figure it out! It is very annoying!