diff -urN 2.6.7/drivers/input/serio/i8042.c linux-2.6.7/drivers/input/serio/i8042.c
--- 2.6.7/drivers/input/serio/i8042.c	2004-06-23 15:09:26.091494400 -0500
+++ linux-2.6.7/drivers/input/serio/i8042.c	2004-06-25 08:51:48.125136000 -0500
@@ -406,12 +406,12 @@
 	if (i8042_mux_values[0].exists && (str & I8042_STR_AUXDATA)) {
 
 		if (str & I8042_STR_MUXERR) {
+			printk(KERN_INFO "i8042.c: MUX reports error condition %02x\n", data);
 			switch (data) {
 				case 0xfd:
 				case 0xfe: dfl = SERIO_TIMEOUT; break;
 				case 0xff: dfl = SERIO_PARITY; break;
 			}
-			data = 0xfe;
 		} else dfl = 0;
 
 		dbg("%02x <- i8042 (interrupt, aux%d, %d%s%s)",