PIR problem

sdetweil

@Peter what mode are u trying? xrandr vcgencmd?

only xrandr works on bullseye

Peter

@sdetweil I used xrandr.
Peter

sdetweil

@Peter and if you issue the commands yourself(via ssh)

do they work?

Peter

@sdetweil did not try that.
Peter

N6NG

@Peter Hello Peter… I’m not sure I understand… I ran the following test on my mirror and it worked as it should.

/usr/bin/vcgencmd display_power 0; echo “Display should now be off”; sleep 20; /usr/bin/vcgencmd display_power 1; echo “And now it should be on again”

But now I need to incorporate it into my config.js for my MMM-PIR-Sensor-Lite. I see the command type and ‘vcgencmd’ but once I get that in the config how do I do the turn on and turn off?

Thanks for all the help and you also Sam.

Dennis

TangoE30

@N6NG and @sdetweil
Hi All,
Passing along some info as I was also having problems with my ASUS VZ27EHE monitor staying off / my monitor coming back on with MMM-PIR-Sensor-Lite. The display would turn off, then a blue screen come on saying “HDMI No Signal” but then automatically turned back on. I used both xrandr and xset commands but nothing worked on my pi 4 running Bullseye.

After some digging and looking at this site “https://github.com/raspberrypi/linux/issues/2517”, I replaced the code in the node_helper.js (I know you’re not supposed to touch but this is what worked for me) and it works now. The only issue is on reboot, I have to run a command once to avoid the screen going to a gray state xsetroot -display :0 -solid Black.

case 'xset':
	exec("xset -display :0 s noblank", null);//default: xset dpms force off
	//Have to run 'xsetroot -display :0 -solid Black' on reboot to avoid gray screen
	exec("sleep 1", null);
	exec("xset -display :0 s off", null);
	exec("sleep 1", null);
	exec("xset -display :0 -dpms", null);
	exec("sleep 1", null);
	exec("xset -display :0 s 0 0", null);
	exec("sleep 1", null);
	exec("xset -display :0 dpms 0 0 0", null);
	exec("sleep 1", null);
	exec("xset dpms force off", null);

Don’t ask me how it works and I’ll give credit to E3V3A for posting that code. Hopefully this will help for those with a non-CEC compliant monitor and can fully turn off the monitor when not in use.