diff --git a/autorandr b/autorandr
index a8d8914..89d5e25 100755
--- a/autorandr
+++ b/autorandr
@@ -113,13 +113,16 @@ setup_fp() {
 }
 
 current_cfg_xrandr() {
-	$XRANDR -q | awk '
+	local PRIMARY_SETUP=$(xdpyinfo -ext XINERAMA|awk '/^  head #0:/ {printf $3 $5}')
+	$XRANDR -q | awk -v primary_setup=${PRIMARY_SETUP} '
 	# display is connected and has a mode
 	/^[^ ]+ connected [^(]/ {
 		split($3, A, "+");
 		print "output "$1;
 		print "mode "A[1];
 		print "pos "A[2]"x"A[3];
+		if (A[1] A[2] "," A[3] == primary_setup)
+			print "primary";
 		next;
 	}
 	# disconnected or disabled displays