--- xdg-screensaver.orig	2018-05-20 01:18:48.000000000 +0300
+++ xdg-screensaver	2018-11-26 12:32:17.142582293 +0200
@@ -619,6 +619,14 @@
       xautolock_screensaver "$1"
       ;;
 
+    xss-lock_screensaver)
+      if [ "$1" = "lock" ]; then
+        screensaver_xserver "activate"
+      else
+        screensaver_xserver "$1"
+      fi
+      ;;
+
     xfce)
       [ -n "$DISPLAY" ] && screensaver_xserver "$1"
       ;;
@@ -1394,6 +1402,8 @@
 dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetNameOwner string:org.mate.ScreenSaver > /dev/null 2>&1 && DE="mate_screensaver"
 # Consider "xautolock" a separate DE
 xautolock -enable > /dev/null 2>&1 && DE="xautolock_screensaver"
+# Consider "xss-lock" a separate DE
+xss-lock --version > /dev/null 2>&1 && ps x -o cmd | grep -q '^xss-lock' && DE="xss-lock_screensaver"
 
 if [ "$action" = "resume" ] ; then
     do_resume