diff -ur old/include/synaptics.h new/include/synaptics.h
--- old/include/synaptics.h	2008-11-26 11:40:08.000000000 +0200
+++ new/include/synaptics.h	2008-11-26 11:42:21.000000000 +0200
@@ -61,6 +61,7 @@
 typedef struct _SynapticsSHM
 {
     int version;			    /* Driver version */
+    int xrandr;
 
     /* Current device state */
     int x, y;				    /* actual x, y coordinates */
diff -ur old/src/eventcomm.c new/src/eventcomm.c
--- old/src/eventcomm.c	2008-11-26 10:49:01.000000000 +0200
+++ new/src/eventcomm.c	2008-11-26 11:58:49.000000000 +0200
@@ -192,6 +192,8 @@
     struct input_event ev;
     Bool v;
     struct SynapticsHwState *hw = &(comm->hwState);
+    SynapticsPrivate *priv = (SynapticsPrivate *) (local->private);
+    SynapticsSHM *para = priv->synpara;
 
     while (SynapticsReadEvent(comm, &ev)) {
 	switch (ev.type) {
@@ -272,10 +274,24 @@
 	case EV_ABS:
 	    switch (ev.code) {
 	    case ABS_X:
-		hw->x = ev.value;
+		if (para->xrandr==0)
+			hw->x = ev.value;
+		if (para->xrandr==1)
+			hw->y = -ev.value;
+		if (para->xrandr==2)
+			hw->y = ev.value;
+		if (para->xrandr==3)
+			hw->x = -ev.value;
 		break;
 	    case ABS_Y:
-		hw->y = ev.value;
+		if (para->xrandr==0)
+			hw->y = ev.value;
+		if (para->xrandr==1)
+			hw->x = ev.value;
+		if (para->xrandr==2)
+			hw->x = -ev.value;
+		if (para->xrandr==3)
+			hw->y = -ev.value;
 		break;
 	    case ABS_PRESSURE:
 		hw->z = ev.value;
diff -ur old/src/synaptics.c new/src/synaptics.c
--- old/src/synaptics.c	2008-11-26 10:49:01.000000000 +0200
+++ new/src/synaptics.c	2008-11-26 11:41:12.000000000 +0200
@@ -384,6 +384,7 @@
     /* read the parameters */
     pars = &priv->synpara_default;
     pars->version = (PACKAGE_VERSION_MAJOR*10000+PACKAGE_VERSION_MINOR*100+PACKAGE_VERSION_PATCHLEVEL);
+    pars->xrandr = xf86SetIntOption(opts, "Xrandr", 0);
 
     /* The synaptics specs specify typical edge widths of 4% on x, and 5.4% on
      * y (page 7) [Synaptics TouchPad Interfacing Guide, 510-000080 - A
diff -ur old/tools/synclient.c new/tools/synclient.c
--- old/tools/synclient.c	2008-11-26 11:01:47.000000000 +0200
+++ new/tools/synclient.c	2008-11-26 11:03:37.000000000 +0200
@@ -60,6 +60,7 @@
 { name, offsetof(SynapticsSHM, memb), (type), (min_val), (max_val) }
 
 static struct Parameter params[] = {
+    DEFINE_PAR("Xrandr",               xrandr,                  PT_INT,    0, 3),
     DEFINE_PAR("LeftEdge",             left_edge,               PT_INT,    0, 10000),
     DEFINE_PAR("RightEdge",            right_edge,              PT_INT,    0, 10000),
     DEFINE_PAR("TopEdge",              top_edge,                PT_INT,    0, 10000),