===================================================================
RCS file: /usr/share/logwatch/scripts/services/RCS/pam_unix,v
retrieving revision 1.1
diff -u -r1.1 /usr/share/logwatch/scripts/services/pam_unix
--- a/scripts/services/pam_unix	2022/01/20 14:21:24	1.1
+++ b/scripts/services/pam_unix	2022/01/20 14:22:35
@@ -340,6 +340,12 @@
       } else  {
          $data{$service}{'Unknown Entries'}{$line}++;
       }
+   } elsif ($service eq 'systemd-user') {
+      if ($line =~ /session (?:opened|closed) for user /) {
+         # ignore this line
+      } else {
+         $data{$service}{'Unknown Entries'}{$line}++;
+      }
    } else {
       $data{$service}{'Unknown Entries'}{$line}++;
    }