xset +dpms is not controlling monitor powerdown on raspberry pi 3b

[Gene Heskett <gheskett@shentel.net>]

Greetings folks;

Running LXDE.

And xset dpms q returns:
DPMS (Energy Star):
  Standby: 450    Suspend: 600    Off: 900
  DPMS is Enabled
  Monitor is On

At the end of its report, and the monitor was manually powered down when 
I left the area around 6 pm last night, so it obviously has no knowledge 
of the monitors real status.

Is my install missing some utility X11 thing?

Thanks.

Cheers, Gene Heskett
-- 
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