org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: AWT-XAWT
   at sun.awt.X11.XClipboard$CheckChangeTimerTask.run(XClipboard.java:178)
   at sun.awt.X11.XToolkit.callTimeoutTasks(XToolkit.java:1861)
   at sun.awt.X11.XToolkit.run(XToolkit.java:534)
   at sun.awt.X11.XToolkit.run(XToolkit.java:505)
   at java.lang.Thread.run(Thread.java:745)
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: AWT-EventQueue-0
Caused: org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException: A deadlock was detected.
We suggest to restart the IDE to recover.
   at sun.misc.Unsafe.park(Unsafe.java:0)
   at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
   at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
   at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:867)
   at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1197)
   at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:214)
   at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:290)
   at sun.awt.SunToolkit.awtLock(SunToolkit.java:245)
   at sun.awt.X11.XRootWindow.getInstance(XRootWindow.java:36)
   at sun.awt.X11.XBaseWindow.getXAWTRootWindow(XBaseWindow.java:410)
   at sun.awt.X11.XClipboard.registerClipboardViewerChecked(XClipboard.java:164)
   at sun.awt.datatransfer.SunClipboard.addFlavorListener(SunClipboard.java:377)
   at org.netbeans.NbClipboard.eventDispatched(NbClipboard.java:372)
   at java.awt.Toolkit$SelectiveAWTEventListener.eventDispatched(Toolkit.java:2448)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2340)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2339)
   at java.awt.Toolkit.notifyAWTEventListeners(Toolkit.java:2298)
   at java.awt.Component.dispatchEventImpl(Component.java:4768)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1887)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:947)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:449)
   at java.awt.Component.dispatchEventImpl(Component.java:4742)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:692)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:708)
   at java.awt.EventQueue$4.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.SentEvent.dispatch(SentEvent.java:70)
   at java.awt.DefaultKeyboardFocusManager$DefaultKeyboardFocusManagerSentEvent.dispatch(DefaultKeyboardFocusManager.java:216)
   at java.awt.DefaultKeyboardFocusManager.sendMessage(DefaultKeyboardFocusManager.java:243)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:327)
   at java.awt.Component.dispatchEventImpl(Component.java:4742)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:692)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:708)
   at java.awt.EventQueue$4.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.SequencedEvent.dispatch(SequencedEvent.java:128)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:692)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:708)
   at java.awt.EventQueue$4.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)