MMM-BackgroundSlideshow

sdetweil

@CyruS1337 by default, the raspberry pi OS uses physical memory… if it runs out, it will try to swap out things not being used to make room for current work. but… the swap space is very small, only 100 meg…
so the swap out fails, and the current process is killed

CyruS1337

Ok, thanks for the explanation :) I can understand that reasonably. You are a genius

sdetweil

@CyruS1337 no… it happened to me!

CyruS1337

Now I thought it was solved, but after about 1 hour the screen was black again. I had to stop the MagicMirror with pm2 stop 0 and then restart it with pm2 start 0.

I also changed the size from 100 to 1024.

What else can it be?

sudo dphys-swapfile swapoff
sudo nano /etc/dphys-swapfile / (changed size 1024)
sudo dphys-swapfile swapon

sdetweil

@CyruS1337 and rebooted after changing swap file

CyruS1337

@sdetweil said in MMM-BackgroundSlideshow:

and rebooted after changing swap file

I have now reboot the mirror …

sdetweil

free -m
Command will show memory usage

CyruS1337

@sdetweil said in MMM-BackgroundSlideshow:

free -m
Command will show memory usage

pi@raspberrypi_1:~ $ free -m
              total        used        free      shared  buff/cache   available
Mem:            925         218         404           1         302         657
Swap:          1023         111         912

CyruS1337

This morning, the mirror was dark again.

This is the memory output

pi@raspberrypi_1:~ $ free -m
              total        used        free      shared  buff/cache   available
Mem:            925         220         391           1         313         653
Swap:          1023         118         905

Edit: The mirror was stopped and started and after 15min he was dark again …

CyruS1337

I seem to have found the mistake. I have selected one to quality of photos for playing the photos (4mb per photo). The fact that I have chosen a lower quality of the photos, the problem is gone.