2 files changed, 14 insertions, 0 deletions
diff --git a/src/nativewindow/native/x11/Xmisc.c b/src/nativewindow/native/x11/Xmisc.c
index 69f0c0746..31620d752 100644
--- a/src/nativewindow/native/x11/Xmisc.c
+++ b/src/nativewindow/native/x11/Xmisc.c
@@ -624,6 +624,7 @@ JNIEXPORT void JNICALL Java_jogamp_nativewindow_x11_X11Lib_DestroyWindow
 {
     Display * dpy = (Display *)(intptr_t)display;
     Window      w = (Window) window;
+    XWindowAttributes xwa;
 
     if(NULL==dpy) {
         NativewindowCommon_throwNewRuntimeException(env, "invalid display connection..");
@@ -631,10 +632,16 @@ JNIEXPORT void JNICALL Java_jogamp_nativewindow_x11_X11Lib_DestroyWindow
     }
 
     NativewindowCommon_x11ErrorHandlerEnable(env, dpy, 0, 1, errorHandlerQuiet, 0);
+    XSync(dpy, False);
+    memset(&xwa, 0, sizeof(XWindowAttributes));
+    XGetWindowAttributes(dpy, w, &xwa); // prefetch colormap to be destroyed after window destruction
     XSelectInput(dpy, w, 0);
     XUnmapWindow(dpy, w);
     XSync(dpy, False);
     XDestroyWindow(dpy, w);
+    if( None != xwa.colormap ) {
+        XFreeColormap(dpy, xwa.colormap);
+    }
     // NativewindowCommon_x11ErrorHandlerEnable(env, dpy, 0, 0, errorHandlerQuiet, 1);
 }
 
diff --git a/src/newt/native/X11Window.c b/src/newt/native/X11Window.c
index 6c5a127b6..e567781cf 100644
--- a/src/newt/native/X11Window.c
+++ b/src/newt/native/X11Window.c
@@ -676,6 +676,7 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_CloseWindow0
     Display * dpy = (Display *) (intptr_t) display;
     Window w = (Window)window;
     jobject jwindow;
+    XWindowAttributes xwa;
 
     if(dpy==NULL) {
         NewtCommon_FatalError(env, "invalid display connection..");
@@ -694,13 +695,19 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_CloseWindow0
     }
 
     XSync(dpy, False);
+    memset(&xwa, 0, sizeof(XWindowAttributes));
+    XGetWindowAttributes(dpy, w, &xwa); // prefetch colormap to be destroyed after window destruction
     XSelectInput(dpy, w, 0);
     XUnmapWindow(dpy, w);
+    XSync(dpy, False);
 
     // Drain all events related to this window ..
     Java_jogamp_newt_driver_x11_DisplayDriver_DispatchMessages0(env, obj, display, javaObjectAtom, windowDeleteAtom /*, kbdHandle */); // XKB disabled for now
 
     XDestroyWindow(dpy, w);
+    if( None != xwa.colormap ) {
+        XFreeColormap(dpy, xwa.colormap);
+    }
     XSync(dpy, True); // discard all events now, no more handler
 
     (*env)->DeleteGlobalRef(env, jwindow);