src/java.desktop/unix/classes/sun/awt/X11/XMouseInfoPeer.java

*** 28,37 ****
--- 28,38 ----
  import java.awt.Point;
  import java.awt.Window;
  import java.awt.GraphicsEnvironment;
  import java.awt.GraphicsDevice;
  import java.awt.peer.MouseInfoPeer;
+ import sun.awt.X11GraphicsDevice;
  
  import sun.awt.AWTAccessor;
  
  public class XMouseInfoPeer implements MouseInfoPeer {
  
*** 62,71 ****
--- 63,78 ----
                                             XlibWrapper.larg6,  // yw_return
                                             XlibWrapper.larg7); // mask_return
                  if (pointerFound) {
                      point.x = Native.getInt(XlibWrapper.larg3);
                      point.y = Native.getInt(XlibWrapper.larg4);
+                     GraphicsDevice device = gds[i];
+                     if (device instanceof X11GraphicsDevice) {
+                         int scale = ((X11GraphicsDevice) device).getScaleFactor();
+                         point.x = XlibUtil.scaleDown(point.x, scale);
+                         point.y = XlibUtil.scaleDown(point.y, scale);
+                     }
                      return i;
                  }
              }
          } finally {
              XToolkit.awtUnlock();