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dagwieers opened this issue Jul 13, 2016 · 2 comments · Fixed by #5132
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Arduino requires X11 DISPLAY where none should be needed #5131

dagwieers opened this issue Jul 13, 2016 · 2 comments · Fixed by #5132
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Component: IDE The Arduino IDE Type: Duplicate Another item already exists for this topic

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@dagwieers
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If you use Arduino from the command-line, it complains about requiring an X11 DISPLAY:

$ arduino --pref boardsmanager.additional.urls=http://arduino.esp8266.com/stable/package_esp8266com_index.json --save-prefs
Picked up JAVA_TOOL_OPTIONS: 
Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: java.awt.HeadlessException: 
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
    at java.awt.SplashScreen.getSplashScreen(SplashScreen.java:117)
    at processing.app.Base.<clinit>(Base.java:91)

This forces people to implement ugly work-arounds using Xvfb in order to accomodate Arduino IDE: https://github.com/timelab/ADEM/blob/master/.travis.yml#L5

  # Ensure we have a DISPLAY for the Arduino IDE
  - "/sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16"
  - sleep 3
  - export DISPLAY=:1.0
@dagwieers dagwieers changed the title Arduino requires X11 DISPLAY where no should be needed Arduino requires X11 DISPLAY where none should be needed Jul 13, 2016
dagwieers added a commit to dagwieers/Arduino-1 that referenced this issue Jul 14, 2016
@dagwieers
Do not require X11 DISPLAY for CLI prefs changes
354fe10 
Settings preferences does not need a splash-screen. Avoid needing an X11 DISPLAY in this case so CI solutions do not bail out (e.g. Travis).
More information in arduino#5131.

This fixes arduino#5131.
@dagwieers dagwieers mentioned this issue Jul 14, 2016
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@dagwieers
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Duplicate of #1981

dagwieers added a commit to dagwieers/Arduino-1 that referenced this issue Jul 15, 2016
@dagwieers
Do not show splash screen when options are present
1b95b43 
This ensures now splash-screen is shown when preferences are changed or CLI-mode is used.

More information in arduino#5131.

However this does NOT fix arduino#5131, since the Arduino IDE in CLI-mode still requires X11 (according to arduino#1981).
@sandeepmistry sandeepmistry added the Component: IDE The Arduino IDE label Jul 18, 2016
@facchinm
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Indeed, closing as duplicate of #1981 (however, the related PR is really good 😄 )

@per1234 per1234 added the Type: Duplicate Another item already exists for this topic label Jul 1, 2017
@facchinm facchinm mentioned this issue Aug 14, 2017
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Do not show splash screen when options are present dagwieers/Arduino-1
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@dagwieers @sandeepmistry @per1234 @facchinm