diff -Nru sddm-0.17.0/debian/changelog sddm-0.17.0/debian/changelog
--- sddm-0.17.0/debian/changelog	2018-04-17 21:21:36.000000000 +0000
+++ sddm-0.17.0/debian/changelog	2018-04-20 13:12:06.000000000 +0000
@@ -1,3 +1,10 @@
+sddm (0.17.0-1ubuntu7) bionic; urgency=medium
+
+  * debian/sddm.service: Always wait for plymouth quit to run before
+    trying to start.
+
+ -- Rik Mills <rikmills@kubuntu.org>  Fri, 20 Apr 2018 14:12:06 +0100
+
 sddm (0.17.0-1ubuntu6) bionic; urgency=medium
 
   * debian/sddm.service Apply the fix for the race between sddm and
diff -Nru sddm-0.17.0/debian/sddm.service sddm-0.17.0/debian/sddm.service
--- sddm-0.17.0/debian/sddm.service	2018-04-17 21:21:36.000000000 +0000
+++ sddm-0.17.0/debian/sddm.service	2018-04-20 13:12:06.000000000 +0000
@@ -15,7 +15,7 @@
 
 # Ordering
 Conflicts=plymouth-quit-wait.service
-After=systemd-user-sessions.service plymouth-start.service plymouth-quit-wait.service systemd-logind.service
+After=systemd-user-sessions.service plymouth-start.service plymouth-quit-wait.service plymouth-quit.service systemd-logind.service
 OnFailure=plymouth-quit.service
 
 [Service]