I faced the same problem with my LG screen but found a work around.
Step 1) I used wiringpi.com and modified the simple blink example to send out just one impulse:
#include
int main (void)
{
wiringPiSetup () ;
pinMode (0, OUTPUT) ;
digitalWrite (0, HIGH) ; delay (200) ;
digitalWrite (0, LOW) ;
return 0 ;
}
Step 2) I modified the PIR modules’ node_helper.js so within the functions activate / deactivate don’t enable/disable the HDMI output but execute my compiled ‘blink’ command.
Step 3) I hard - wired the singal pin to the (with resistor / transistor) to the screens power-button.
done :-)