--- linux-2.6.7/drivers/input/mouse/psmouse-base.c.orig	2004-08-04 12:30:55.985806400 -0500
+++ linux-2.6.7/drivers/input/mouse/psmouse-base.c	2004-08-04 12:34:15.392539200 -0500
@@ -461,6 +461,12 @@
 			return type;
 	}
 
+/*
+ * Reset to defaults in case the device got confused by extended
+ * protocol probes.
+ */
+	psmouse_command(psmouse, NULL, PSMOUSE_CMD_RESET_DIS);
+
 	if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse)) {
 
 		if (set_properties) {