MagicMirror on second Monitor

Babene1

I use a raspberry Pi 4 with two 24“ monitors. I want to start with one magicmirror on monitor 2 and a second instanc on monitor 1.
First step is to start MagicMirror on monitor 2, with option „electronOptions:{ x:1920 },“
in config.js

I start magicmirror with command „npm run start“ and dependent with monitor is the terminal window opens the Magicmirror. If terminal is on monitor 1 start magicmirror is on monitor 1.
If terminal is on monitor 2 start magicmirror is on monitor 2.
Same problem when i start the MagicMirroc with pm2.

I think i have two seperate monitor not 1 monitor with resulation 3840 pixel.
Is this a problem but what is the solution?

Thank you for any tips

BKeyport

@Babene1 Please refer to the documentation for MagicMirror. https://docs.magicmirror.builders/configuration/introduction.html#advanced-configuration-and-frequently-asked-how-to-configure-examples

You may want to also run sudo raspi-config and change back to the x11 desktop environment. there’s some unique issues with the new environment that may not be covered.

sdetweil

@Babene1 you should have two X11 DISPLAY objects…

the default is :0 (which we set in the mm.sh script and in the package.json START clause, if it is not set

"scripts": {
		"start": "DISPLAY=\"${DISPLAY:=:0}\" ./node_modules/.bin/electron js/electron.js",

so you shouldn’t need the electronOptions settings, just set the display variable
export DISPLAY=??

xrandr --query

should give you the list of displays

note this is the X11 term, the Wayland value is different

when I do xrandr on my pi5 with wayland (only ‘one’ screen) I see

xrandr --query
Screen 0: minimum 16 x 16, current 3840 x 2160, maximum 32767 x 32767
XWAYLAND14 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   3840x2160     29.98*+
   2048x1536     29.95  
   1920x1440     29.95  
   1600x1200     29.95  
   1440x1080     29.86  
   1400x1050     29.98  
   1280x1024     29.90  
   1280x960      29.82  
   1152x864      29.92  
   1024x768      29.89  
   800x600       29.55  
   640x480       29.85  
   320x240       27.50  
   2560x1600     29.99  
   1920x1200     29.95  
   1680x1050     29.95  
   1440x900      29.91  
   1280x800      29.83  
   720x480       29.25  
   640x400       29.58  
   320x200       26.53  
   3200x1800     29.96  
   2880x1620     29.96  
   2560x1440     29.94  
   2048x1152     29.94  
   1920x1080     29.95  
   1600x900      29.92  
   1368x768      29.94  
   1280x720      29.93  
   1024x576      29.84  
   864x486       29.50  
   720x400       29.51  
   640x350       29.03

sdetweil

@Babene1 I have run two monitors one landscape, one portait with MM on each
using the electronOptions:{} settings.

the cursor moves over both seamlessly.
that is one big display space.
the xrandr command will tell you …

do you have two complete independant desktops?

BKeyport

@sdetweil With the displays showing “HDMI-A-1” etc, it’s in Wayland, xrandr doesn’t function under that. This is part of why I suggested going back to X11.

sdetweil

@BKeyport xrandr --query worked while running wayland, output above

wlr-randr does not do --query

BKeyport

@sdetweil Ahh, ok, I thought it was completely dead. Good to know.

Babene1

You are absolutely brilliant, now it works.
I change in “raspi-config” to x11 desktop environment and now magicmirror run on second monitor.

Thank you all for your tips

zane-zan

@BKeyport I believe you are right. I had the same issue. I tried to run the xrandr query and I could not print the displays. I looked everywhere, the only solution I found was to switch back to X11. This was the only way to get the electron option to treat the screen as a single screen and move the display to the second monitor.
Anyway, thanks a lot, reading this post solved my problem and I was trying to figure it out for a while !