Electron Error: Cannot open display :0

bream

I had the same error, and the problem turned out to be that on first boot I had decided to reconfigure the pi to boot to the console rather than the desktop. Consequently I didn’t have a x server running (doh!)
You didn’t mention that as one of your setup steps, but I though it might be worth mentioning.

sdetweil

@rudibarani said in Electron Error: Cannot open display :0:

setup wifi, keyboard, CLI-boot

you ARE running the GUI desktop, right… NOT commandline.

bream

I am now :)

rudibarani

@bream @sdetweil Thank you very much for your reply! This could be the right path! I have initially configured the Pi on the GUI surface (Wifi, Keyboard) and then switched to CLI boot. I have done this with my previous installations of MagicMirror without problems, as electron started the x-server as needed. This does not seem to work anymore…

How do I revert this? I have changed back from CLI-boot to Desktop GUI in raspi-config. If I ssh into the pi and start MagicMirror via DISPLAY=:0 npm start, the application claims to start without problems:

> magicmirror@2.5.0 start /home/pi/MagicMirror
> sh run-start.sh

Starting MagicMirror: v2.5.0
Loading config ...
Loading module helpers ...
No helper found for module: alert.
Initializing new module helper ...
Module helper loaded: updatenotification
No helper found for module: clock.
Initializing new module helper ...
Module helper loaded: calendar
No helper found for module: compliments.
No helper found for module: currentweather.
No helper found for module: weatherforecast.
Initializing new module helper ...
Module helper loaded: newsfeed
All module helpers loaded.
Starting server on port 8080 ... 
Server started ...
Connecting socket for: updatenotification
Connecting socket for: calendar
Starting node helper for: calendar
Connecting socket for: newsfeed
Starting module: newsfeed
Sockets connected & modules started ...
Launching application.

Unfortunately, the display still just shows the GUI of the operation system.
Could you please help me from here?

Thank you very much!

sdetweil

@rudibarani i only do npm start from my ssh session

do u have a keyboard on the pi? if so, ctrl-alt-t will open a shell window… then u should be able to get to the previous command with up arrow…