After one of the last updates (not quite sure which one) I started to notice this new irritating thing, that watching youtube videos in firefox, my desktop computer just turns off displays after 10 minutes or so. I had it set to 60m. Then I disabled ALL display dimming and turning off in power settings, yet it does happen after like every 10 minutes completely ignoring my power settings (both when enabled and set to 60 and when disabled entirely).
Using Manjaro KDE.
Is there some other place where I could alter this behaviour and more things to turn off?