diff -up cups-2.2.12/scheduler/main.c.systemd-socket cups-2.2.12/scheduler/main.c
--- cups-2.2.12/scheduler/main.c.systemd-socket	2019-08-16 00:35:30.000000000 +0200
+++ cups-2.2.12/scheduler/main.c	2019-08-19 09:31:09.703370325 +0200
@@ -674,8 +674,16 @@ main(int  argc,				/* I - Number of comm
 
 #ifdef HAVE_ONDEMAND
   if (OnDemand)
+  {
     cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started on demand.");
-  else
+# ifdef HAVE_SYSTEMD
+    sd_notifyf(0, "READY=1\n"
+               "STATUS=Scheduler is running...\n"
+               "MAINPID=%lu",
+               (unsigned long) getpid());
+# endif /* HAVE_SYSTEMD */
+  } else
+
 #endif /* HAVE_ONDEMAND */
   if (fg)
     cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started in foreground.");
diff -up cups-2.2.12/scheduler/org.cups.cupsd.path.in.systemd-socket cups-2.2.12/scheduler/org.cups.cupsd.path.in
--- cups-2.2.12/scheduler/org.cups.cupsd.path.in.systemd-socket	2019-08-16 00:35:30.000000000 +0200
+++ cups-2.2.12/scheduler/org.cups.cupsd.path.in	2019-08-19 09:31:09.703370325 +0200
@@ -1,6 +1,6 @@
 [Unit]
 Description=CUPS Scheduler
-PartOf=org.cups.cupsd.service
+PartOf=cups.service
 
 [Path]
 PathExists=@CUPS_CACHEDIR@/org.cups.cupsd
diff -up cups-2.2.12/scheduler/org.cups.cupsd.service.in.systemd-socket cups-2.2.12/scheduler/org.cups.cupsd.service.in
--- cups-2.2.12/scheduler/org.cups.cupsd.service.in.systemd-socket	2019-08-19 09:31:09.703370325 +0200
+++ cups-2.2.12/scheduler/org.cups.cupsd.service.in	2019-08-19 09:54:58.890036404 +0200
@@ -1,13 +1,13 @@
 [Unit]
 Description=CUPS Scheduler
 Documentation=man:cupsd(8)
-After=sssd.service
+After=sssd.service network.target
 
 [Service]
 ExecStart=@sbindir@/cupsd -l
-Type=simple
+Type=notify
 Restart=on-failure
 
 [Install]
-Also=org.cups.cupsd.socket org.cups.cupsd.path
+Also=cups.socket cups.path
 WantedBy=printer.target
diff -up cups-2.2.12/scheduler/org.cups.cupsd.socket.in.systemd-socket cups-2.2.12/scheduler/org.cups.cupsd.socket.in
--- cups-2.2.12/scheduler/org.cups.cupsd.socket.in.systemd-socket	2019-08-16 00:35:30.000000000 +0200
+++ cups-2.2.12/scheduler/org.cups.cupsd.socket.in	2019-08-19 09:31:09.703370325 +0200
@@ -1,6 +1,6 @@
 [Unit]
 Description=CUPS Scheduler
-PartOf=org.cups.cupsd.service
+PartOf=cups.service
 
 [Socket]
 ListenStream=@CUPS_DEFAULT_DOMAINSOCKET@
diff -up cups-2.2.12/scheduler/org.cups.cups-lpd.socket.systemd-socket cups-2.2.12/scheduler/org.cups.cups-lpd.socket
--- cups-2.2.12/scheduler/org.cups.cups-lpd.socket.systemd-socket	2019-08-16 00:35:30.000000000 +0200
+++ cups-2.2.12/scheduler/org.cups.cups-lpd.socket	2019-08-19 09:31:09.703370325 +0200
@@ -1,6 +1,6 @@
 [Unit]
 Description=CUPS LPD Server Socket
-PartOf=org.cups.cups-lpd.service
+PartOf=cups-lpd.service
 
 [Socket]
 ListenStream=515