Here is my working vcgencmd-Replacment:

https://pastebin.com/5n8zqL5a

Just copy&paste this into this file:
/home/pi/MagicMirror/modules/MMM-PIR-Sensor/node_helper.js
and replace the whole existing code there.

After that the Problem was fixed for me.

I installed xscreensaver but to Problem exists again. I found out that it must be a problem from lightdm.

After my screen was black again i tried to connect by vnc but the port was not reachable.

So i did this:

sudo service lightdm restart

And after that vnc was working again and my mirror was displayed on my display.

Now i have to find out why lightdm stops working after some time. Any idea howto debug?

@Mykle1 how can i check if my screensafer is disabled?

Hi,
my MagicMirror2 is running on a Raspberry Pi 3 on Rasbian. MagicMirror2 ist running on latest version.

I use a PIR sensor to wake up the screen for 5min after motion detection. This runs fine, but sometimes the display is not waking up. If i turn on the display manual, i get no MagicMirror displayed. Restarting MagicMirror doesn‘t help. Only restarting my Pi works fine, but after some days the same problem happened again. Can someone help to debug this?

Used PIR Modul:
https://github.com/paviro/MMM-PIR-Sensor

NodeJS Version:
6.14.1

MagicMirror Version:
2.3.1

Thanks for helping

Hi @Peter,
thanks for your help. Have you maybe a photo from your cutted border? What did you use to cut the plastic?

Thanks eckonator

Hi, i am new here and i try to build my first magic mirror.

I bought a cheap 24“ Display from samsung. The model is p2450. It will delivered tomorrow. After i bought the Display, i did a little research and found out, that the Buttons from this Display are by touch on display border (no mechanical buttons). The question is, if the display will work when i remove the case to save place for my mirror?

Hope someone have a samsung display, too and can answer my question?