Janusz_Polak Posted December 31, 2022 Share Posted December 31, 2022 From file .log: JVM info: Private Build - 19.0.1 - 19.0.1+10-Ubuntu-1ubuntu122.04 java.net.preferIPv4Stack=true Found java version 19.0.1 Exception in thread "main" java.awt.HeadlessException: No X11 DISPLAY variable was set, or no headful library support was found, but this program performed an operation which requires it, at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:166) at java.desktop/java.awt.Window.<init>(Window.java:553) at java.desktop/java.awt.Frame.<init>(Frame.java:428) at java.desktop/java.awt.Frame.<init>(Frame.java:393) at java.desktop/javax.swing.SwingUtilities$SharedOwnerFrame.<init>(SwingUtilities.java:1919) at java.desktop/javax.swing.SwingUtilities.getSharedOwnerFrame(SwingUtilities.java:1995) at java.desktop/javax.swing.JOptionPane.getRootFrame(JOptionPane.java:1696) at java.desktop/javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:875) at java.desktop/javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:677) at java.desktop/javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:648) at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:177) at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147) Quote Link to comment Share on other sites More sharing options...
warjort Posted December 31, 2022 Share Posted December 31, 2022 Quote Exception in thread "main" java.awt.HeadlessException: No X11 DISPLAY variable was set, or no headful library support was found, but this program performed an operation which requires it, at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:166) You are trying to use the server gui in an environment that has no graphical device. See run.sh for the comment about the nogui parameter. Quote Boilerplate: If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one. If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install Large files should be posted to a file sharing site like https://gist.github.com You should also read the support forum sticky post. Link to comment Share on other sites More sharing options...
warjort Posted December 31, 2022 Share Posted December 31, 2022 (edited) 9 minutes ago, warjort said: You are trying to use the server gui in an environment that has no graphical device. See run.sh for the comment about the nogui parameter. Sorry this is the installer not the actual server. You need to pass the parameters on the command line if you can't start the gui. e.g. java -jar forge-xxx-installer.jar --installServer /folder/where/you/want/the/server Edited December 31, 2022 by warjort Quote Boilerplate: If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one. If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install Large files should be posted to a file sharing site like https://gist.github.com You should also read the support forum sticky post. Link to comment Share on other sites More sharing options...
warjort Posted December 31, 2022 Share Posted December 31, 2022 Quote JVM info: Private Build - 19.0.1 - 19.0.1+10-Ubuntu-1ubuntu122.04 A lot of mods use mixin which doesn't support java 19. You need to install and use java 17 if you have any of those. 1 Quote Boilerplate: If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one. If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install Large files should be posted to a file sharing site like https://gist.github.com You should also read the support forum sticky post. Link to comment Share on other sites More sharing options...
Janusz_Polak Posted December 31, 2022 Author Share Posted December 31, 2022 11 minutes ago, warjort said: A lot of mods use mixin which doesn't support java 19. You need to install and use java 17 if you have any of those. ok, thanks, this solved the problem Quote Link to comment Share on other sites More sharing options...
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