File mate-media-gtk-3.20.patch of Package mate-media

--- a/configure.ac
+++ b/configure.ac
@@ -32,9 +32,9 @@ AC_C_INLINE
 AC_TYPE_OFF_T
 AC_TYPE_SIZE_T
 
-GLIB_REQUIRED_VERSION=2.50.0
-GIO_REQUIRED_VERSION=2.50.0
-GTK_REQUIRED_VERSION=3.22.0
+GLIB_REQUIRED_VERSION=2.48.0
+GIO_REQUIRED_VERSION=2.48.0
+GTK_REQUIRED_VERSION=3.20.0
 CANBERRA_REQUIRED_VERSION=0.13
 MATE_MIXER_REQUIRED_VERSION=1.10.0
 MATE_DESKTOP_REQUIRED_VERSION=1.17.0
--- a/mate-volume-control/gvc-stream-status-icon.c
+++ b/mate-volume-control/gvc-stream-status-icon.c
@@ -70,7 +70,11 @@ popup_dock (GvcStreamStatusIcon *icon, g
         GdkScreen     *screen;
         int            x;
         int            y;
+#if GTK_CHECK_VERSION (3, 22, 0)
         GdkMonitor    *monitor_num;
+#else
+        int            monitor_num;
+#endif
         GdkRectangle   monitor;
         GtkRequisition dock_req;
 
@@ -89,8 +93,13 @@ popup_dock (GvcStreamStatusIcon *icon, g
         gvc_channel_bar_set_orientation (GVC_CHANNEL_BAR (icon->priv->bar),
                                          1 - orientation);
 
+#if GTK_CHECK_VERSION (3, 22, 0)
         monitor_num = gdk_display_get_monitor_at_point (gdk_screen_get_display (screen), area.x, area.y);
         gdk_monitor_get_geometry (monitor_num, &monitor);
+#else
+        monitor_num = gdk_screen_get_monitor_at_point (screen, area.x, area.y);
+        gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
+#endif
 
         gtk_container_foreach (GTK_CONTAINER (icon->priv->dock),
                                (GtkCallback) gtk_widget_show_all, NULL);