--- trunk/hwinfo/emulate-ddcxinfo-knoppix.sh	2012/02/17 10:09:35	1646
+++ trunk/hwinfo/emulate-ddcxinfo-knoppix.sh	2012/04/24 14:11:07	1750
@@ -1,6 +1,23 @@
 #!/bin/bash
 
 case $1 in
-	-vsync) hwinfo --monitor | grep "Vert. Sync" | sed 's:.*Vert.*Sync\ Range\:\ \(.*\)\ Hz:\1:' ;;
-	-hsync) hwinfo --monitor | grep "Hor. Sync" | sed 's:.*Hor.*Sync\ Range\:\ \(.*\)\ kHz:\1:' ;;
+	-vsync) 
+		vsync=$(hwinfo --monitor | grep "Vert. Sync" | sed 's:.*Vert.*Sync\ Range\:\ \(.*\)\ Hz:\1:')
+		if [[ -z ${vsync} ]]
+		then
+			echo "0-0"
+		else
+			echo "${vsync}"
+		fi
+		;;
+
+	-hsync)
+		hsync=$(hwinfo --monitor | grep "Hor. Sync" | sed 's:.*Hor.*Sync\ Range\:\ \(.*\)\ kHz:\1:')
+		if [[ -z ${hsync} ]]
+		then
+			echo "0-0"
+		else
+			echo "${hsync}"
+		fi
+		;;
 esac