id summary reporter owner description type status priority milestone component version resolution keywords cc 23647 JOSM won't start up on Kubuntu 24.04 anonymous anonymous "On a freshly installed Kubuntu 24.04, JOSM won't start up. Java version is OpenJDK 21 from Ubuntu repos. Starting manually from terminal gives the following response: {{{ $ java --add-exports=java.base/sun.security.action=ALL-UNNAMED --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED -jar /usr/share/josm/josm-1.5.svn19039.jar Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=lcd 2024-04-27 21:56:29.514 WARNUNG: COMPAT locale provider will be removed in a future release 2024-04-27 21:56:29.598 INFORMATION: Protokollierungsgrad ist bei INFORMATION (INFO, 800) 2024-04-27 21:56:30.031 INFORMATION: Nutzbares IPv6-Netzwerk erkannt, IPv6 wird gegenüber IPv4 bevorzugt. 2024-04-27 21:56:30.049 SCHWERWIEGEND: Handled by bug report queue: java.lang.NullPointerException: Cannot invoke ""String.startsWith(String)"" because ""platName"" is null java.lang.NullPointerException: Cannot invoke ""String.startsWith(String)"" because ""platName"" is null at java.desktop/sun.awt.X11FontManager.getFileNameFromPlatformName(X11FontManager.java:161) at java.desktop/sun.font.SunFontManager.initCompositeFonts(SunFontManager.java:3102) at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:445) at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:309) at java.base/java.security.AccessController.doPrivileged(AccessController.java:319) at java.desktop/sun.font.SunFontManager.(SunFontManager.java:309) at java.desktop/sun.awt.FcFontManager.(FcFontManager.java:35) at java.desktop/sun.awt.X11FontManager.(X11FontManager.java:55) at java.desktop/sun.font.PlatformFontInfo.createFontManager(PlatformFontInfo.java:37) at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:51) at java.desktop/sun.font.SunFontManager.getInstance(SunFontManager.java:242) at java.desktop/sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:260) at java.desktop/sun.swing.SwingUtilities2.getFontMetrics(SwingUtilities2.java:1242) at java.desktop/javax.swing.JComponent.getFontMetrics(JComponent.java:1700) at java.desktop/javax.swing.plaf.basic.BasicGraphicsUtils.getPreferredButtonSize(BasicGraphicsUtils.java:360) at java.desktop/javax.swing.plaf.basic.BasicButtonUI.getPreferredSize(BasicButtonUI.java:542) at java.desktop/javax.swing.plaf.basic.BasicButtonUI.getMinimumSize(BasicButtonUI.java:532) at java.desktop/javax.swing.JComponent.getMinimumSize(JComponent.java:1814) at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.addButtonComponents(BasicOptionPaneUI.java:818) at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.createButtonArea(BasicOptionPaneUI.java:751) at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.installComponents(BasicOptionPaneUI.java:206) at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.installUI(BasicOptionPaneUI.java:160) at java.desktop/javax.swing.JComponent.setUI(JComponent.java:740) at java.desktop/javax.swing.JOptionPane.setUI(JOptionPane.java:1858) at java.desktop/javax.swing.JOptionPane.updateUI(JOptionPane.java:1880) at java.desktop/javax.swing.JOptionPane.(JOptionPane.java:1845) at java.desktop/javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:869) at org.openstreetmap.josm.gui.MainApplication.mainJOSM(MainApplication.java:891) at org.openstreetmap.josm.gui.MainApplication$3.processArguments(MainApplication.java:285) at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:788) 2024-04-27 21:56:31.373 SCHWERWIEGEND: Exception raised in EDT: java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke ""String.startsWith(String)"" because ""platName"" is null. Ursache: java.lang.NullPointerException: Cannot invoke ""String.startsWith(String)"" because ""platName"" is null java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke ""String.startsWith(String)"" because ""platName"" is null at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) at org.openstreetmap.josm.gui.util.GuiHelper.runInEDTAndWaitAndReturn(GuiHelper.java:278) at org.openstreetmap.josm.gui.bugreport.BugReportDialog.showFor(BugReportDialog.java:233) at org.openstreetmap.josm.tools.bugreport.BugReportQueue.displayFor(BugReportQueue.java:134) at org.openstreetmap.josm.tools.bugreport.BugReportQueue.access$200(BugReportQueue.java:17) at org.openstreetmap.josm.tools.bugreport.BugReportQueue$BugReportDisplayRunnable.run(BugReportQueue.java:100) at java.base/java.lang.Thread.run(Thread.java:1583) Caused by: java.lang.NullPointerException: Cannot invoke ""String.startsWith(String)"" because ""platName"" is null at java.desktop/sun.awt.X11FontManager.getFileNameFromPlatformName(X11FontManager.java:161) at java.desktop/sun.font.SunFontManager.initCompositeFonts(SunFontManager.java:3102) at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:445) at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:309) at java.base/java.security.AccessController.doPrivileged(AccessController.java:319) at java.desktop/sun.font.SunFontManager.(SunFontManager.java:309) at java.desktop/sun.awt.FcFontManager.(FcFontManager.java:35) at java.desktop/sun.awt.X11FontManager.(X11FontManager.java:55) at java.desktop/sun.font.PlatformFontInfo.createFontManager(PlatformFontInfo.java:37) at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:51) at java.desktop/sun.font.SunFontManager.getInstance(SunFontManager.java:242) at java.desktop/sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:260) at java.desktop/sun.swing.SwingUtilities2.getFontMetrics(SwingUtilities2.java:1242) at java.desktop/javax.swing.JComponent.getFontMetrics(JComponent.java:1700) at java.desktop/javax.swing.text.PlainView.calculateLongestLine(PlainView.java:783) at java.desktop/javax.swing.text.PlainView.updateMetrics(PlainView.java:332) at java.desktop/javax.swing.text.PlainView.updateDamage(PlainView.java:670) at java.desktop/javax.swing.text.PlainView.insertUpdate(PlainView.java:591) at java.desktop/javax.swing.plaf.basic.BasicTextUI$RootView.insertUpdate(BasicTextUI.java:1711) at java.desktop/javax.swing.plaf.basic.BasicTextUI$UpdateHandler.insertUpdate(BasicTextUI.java:1978) at java.desktop/javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:227) at java.desktop/javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument.java:781) at java.desktop/javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:740) at java.desktop/javax.swing.text.PlainDocument.insertString(PlainDocument.java:131) at java.desktop/javax.swing.text.AbstractDocument.replace(AbstractDocument.java:699) at java.desktop/javax.swing.text.JTextComponent.setText(JTextComponent.java:1725) at org.openstreetmap.josm.gui.bugreport.DebugTextDisplay.setCodeText(DebugTextDisplay.java:62) at org.openstreetmap.josm.gui.bugreport.DebugTextDisplay.(DebugTextDisplay.java:52) at org.openstreetmap.josm.gui.bugreport.BugReportDialog.(BugReportDialog.java:62) at org.openstreetmap.josm.gui.bugreport.BugReportDialog.lambda$showFor$3(BugReportDialog.java:242) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318) at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:720) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:714) at java.base/java.security.AccessController.doPrivileged(AccessController.java:400) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87) at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90) }}} ... then the terminal freezes (until I hit Ctrl-C)." defect closed normal Core worksforme