--- doc/install/linux/install.pl	2019/10/30 03:42:05	1.59
+++ doc/install/linux/install.pl	2019/12/03 04:55:08	1.61
@@ -77,7 +77,7 @@ if (!open(LOG,">>loncapa_install.log"))
           &mt('Stopping execution.')."\n";
     exit;
 } else {
-    print LOG '$Id: install.pl,v 1.59 2019/10/30 03:42:05 raeburn Exp $'."\n";
+    print LOG '$Id: install.pl,v 1.61 2019/12/03 04:55:08 raeburn Exp $'."\n";
 }
 
 #
@@ -734,6 +734,9 @@ sub chkconfig {
         if (($distro =~ /^ubuntu/) && ($version <= 8)) {
             $daemon{'cups'} = 'cupsys';
         }
+        if (($distro =~ /^ubuntu/) && ($version >= 18)) {
+            $daemon{'ntp'}    = 'chrony';
+        }
     } elsif ($distro =~ /^fedora(\d+)/) {
         my $version = $1;
         if ($version >= 15) {
@@ -2603,7 +2606,7 @@ sub copy_httpd_conf {
 ##
 ## The LON-CAPA mpm.conf enables the prefork MPM module in
 ## Apache. This is also the default for RHEL/CentOS/Oracle
-## Linux 7and earlier, and Fedora 26 and earlier. For more
+## Linux 7 and earlier, and Fedora 26 and earlier. For more
 ## recent versions of those distros, the event MPM is enabled
 ## by default. After &copy_mpm_conf() is run, the prefork MPM
 ## module will be enabled instead of the event MPM module.