RPi 3 - Turn Off Display On Sleep For All Users and Login Screen

Hello and thank you for your time,

I am in the beginning stages of deploying 50 Raspberry Pi’s in a work environment. So far, I have been able to get them to accomplish most of what we need, but am getting hung up in one particular area. In order to conserve energy, I need the Pi’s to tell the monitors to sleep after a certain period of time. Initially, I was having issues with sleep mode only “blanking” the screen. I was able to remedy this by adding the line “hdmi_blanking=1” to /boot/config.txt.

Now the screen enters power save mode when logged in to a user, but I need the screens to enter power save mode when idle at the login screen as well.

I have dug around quite a bit with no luck other than what I have mentioned above. If anyone can help point me in the right direction, I would greatly appreciate it.