Index: src/backend/utils/misc/postgresql.conf.sample
===================================================================
--- src/backend/utils/misc/postgresql.conf.sample.orig
+++ src/backend/utils/misc/postgresql.conf.sample
@@ -273,13 +273,13 @@
 
 # - Where to Log -
 
-#log_destination = 'stderr'		# Valid values are combinations of
+log_destination = 'stderr'		# Valid values are combinations of
 					# stderr, csvlog, syslog, and eventlog,
 					# depending on platform.  csvlog
 					# requires logging_collector to be on.
 
 # This is used when logging to stderr:
-#logging_collector = off		# Enable capturing of stderr and csvlog
+logging_collector = on			# Enable capturing of stderr and csvlog
 					# into log files. Required to be on for
 					# csvlogs.
 					# (change requires restart)
@@ -374,7 +374,8 @@
 #log_duration = off
 #log_error_verbosity = default		# terse, default, or verbose messages
 #log_hostname = off
-#log_line_prefix = ''			# special values:
+log_line_prefix = '%t %d %u '
+					# special values:
 					#   %a = application name
 					#   %u = user name
 					#   %d = database name