DPMS settings override

I am trying to get my screens to turn off. Right now they just blank out. I tried changing settings to get them to turn off but something overrides my settings. I am running gnome 3.36.

xset reports

Screen Saver:
  prefer blanking:  yes    allow exposures:  yes
  timeout:  0    cycle:  0
   DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Enabled
  Monitor is On

I tried changing xorg conf to

 Section "ServerFlags"
    Option "OffTime" "10"
 EndSection

No effect

Even when I manually set xset dpms 0 0 500, after a few minutes it gets overwritten back to 0.

I don’t have any screensaver installed. I guess I could install xscreensaver, but I rather find what exactly is overriding my settings. How can I find what is controlling my dpms setting right now?

How?

The preferred method is probably creating your custom config in something like
/etc/X11/xorg.conf.d/99-mydpms.conf

Section "Monitor"
    Identifier "LVDS0"
    Option "DPMS" "true"
EndSection

Section "ServerFlags"
    Option "StandbyTime" "0"
    Option "SuspendTime" "0"
    Option "OffTime" "10"
    Option "BlankTime" "0"
EndSection

Section "ServerLayout"
    Identifier "ServerLayout0"
EndSection

https://wiki.archlinux.org/index.php/Display_Power_Management_Signaling

Like wiki suggests, but it’s overridden.

But thats why I asked … specifically the numeral prefix will have an impact on the order in which the configuration is loaded… hence the 99- in the example above … do you have have such a prefix?

It’s under 10-monitor.conf, but there is no other file to change that setting.