let X figure out the correct mouse protocol

package/xorg/xorg.conf

@@ -39,18 +39,18 @@ EndSection
 Section "InputDevice"
 	Identifier	"PS2 Mouse"
 	Driver		"mouse"
-	Option		"CorePointer"
+	Option		"SendCoreEvents"	"true"
 	Option		"Device"		"/dev/psaux"
-	Option		"Protocol"		"ImPS/2"
+	Option		"Protocol"		"auto"
 	Option		"ZAxisMapping"		"4 5"
 EndSection
 
 Section "InputDevice"
 	Identifier	"USB Mouse"
 	Driver		"mouse"
-	Option		"SendCoreEvents"	"true"
+	Option		"CorePointer"
 	Option		"Device"		"/dev/input/mice"
-	Option		"Protocol"		"ImPS/2"
+	Option		"Protocol"		"auto"
 	Option		"ZAxisMapping"		"4 5"
 EndSection