diff -Nru gnome-control-center-3.18.2_ori/debian/changelog gnome-control-center-3.18.2/debian/changelog
--- gnome-control-center-3.18.2_ori/debian/changelog	2016-03-20 12:31:12.000000000 +0800
+++ gnome-control-center-3.18.2/debian/changelog	2019-05-06 10:55:21.429123834 +0800
@@ -1,3 +1,11 @@
+gnome-control-center (1:3.18.2-1ubuntu6.1) xenial; urgency=medium
+
+  * debian/patches/correct-value-of-90-minutes-to-5400.patch:
+    - backported upstream fix for correct delay value
+    - correct the value of 90 minutes to 5400 (LP: #1827346)
+
+ -- Ethan Hsieh <ethan.hsieh@canonical.com>  Fri, 03 May 2019 11:14:24 +0800
+
 gnome-control-center (1:3.18.2-1ubuntu6) xenial; urgency=medium
 
   * debian/patches:
diff -Nru gnome-control-center-3.18.2_ori/debian/patches/correct-value-of-90-minutes-to-5400.patch gnome-control-center-3.18.2/debian/patches/correct-value-of-90-minutes-to-5400.patch
--- gnome-control-center-3.18.2_ori/debian/patches/correct-value-of-90-minutes-to-5400.patch	1970-01-01 08:00:00.000000000 +0800
+++ gnome-control-center-3.18.2/debian/patches/correct-value-of-90-minutes-to-5400.patch	2019-05-06 10:52:13.105407837 +0800
@@ -0,0 +1,13 @@
+Index: gnome-control-center-3.18.2/panels/power/power.ui
+===================================================================
+--- gnome-control-center-3.18.2.orig/panels/power/power.ui
++++ gnome-control-center-3.18.2/panels/power/power.ui
+@@ -31,7 +31,7 @@
+       </row>
+       <row>
+         <col id="0" translatable="yes">90 minutes</col>
+-        <col id="1">4800</col>
++        <col id="1">5400</col>
+       </row>
+       <row>
+         <col id="0" translatable="yes">100 minutes</col>
diff -Nru gnome-control-center-3.18.2_ori/debian/patches/series gnome-control-center-3.18.2/debian/patches/series
--- gnome-control-center-3.18.2_ori/debian/patches/series	2016-03-20 12:31:12.000000000 +0800
+++ gnome-control-center-3.18.2/debian/patches/series	2019-05-06 10:52:13.105407837 +0800
@@ -11,3 +11,4 @@
 ubuntu-region-packagekit.patch
 ubuntu-region-langpack-install.patch
 ubuntu-keyboard-layout-fix.patch
+correct-value-of-90-minutes-to-5400.patch