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Old 08-31-2004, 09:41 AM   #1
Registered: Aug 2004
Posts: 62

Rep: Reputation: 15
Question ALPS touch pad issue

I have a A15-S157 Toshiba satellite with an ALPS touch pad, running debian "sarge".

I am running tpconfig (3.1.3) in script prior to the starting of gdm at start up. This script does the following:

tpconfig --reset
tpconfig --tapmode=0
tpconfig --info

The output of this script seen at start up, states that tapping is disabled, but it is not.

Can anyone think of anything else that I would need to do to disable tapping on my touch pad?

Old 08-31-2004, 04:15 PM   #2
Senior Member
Registered: Sep 2003
Location: Sweden
Distribution: Debian
Posts: 3,032

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From the README.alps in the Synaptics distribution:
On some (all?) ALPS hardware, it is not possible to disable tapping
unless you apply the patch below. However, some users have reported
that this patch breaks tap-and-drag operations, which is why the patch
is not included in the main alps.patch file.
...and here's the actual kernel patch:
--- linux/drivers/input/mouse/alps.c~alps-test3	2004-02-28 20:46:34.000000000 +0100
+++ linux-petero/drivers/input/mouse/alps.c	2004-02-28 20:49:12.000000000 +0100
@@ -87,6 +87,10 @@ static void ALPS_process_packet(struct p
 	y = (packet[4] & 0x7f) | ((packet[3] & 0x70)<<(7-4));
 	z = packet[5];
+	if (packet[2] & 1) {
+		z = 35;
+	}
 	if (z > 0) {
 		input_report_abs(dev, ABS_X, x);
 		input_report_abs(dev, ABS_Y, y);
@@ -97,7 +101,6 @@ static void ALPS_process_packet(struct p
 	if (z > 30) input_report_key(dev, BTN_TOUCH, 1);
 	if (z < 25) input_report_key(dev, BTN_TOUCH, 0);
-	left  |= (packet[2]     ) & 1;
 	left  |= (packet[3]     ) & 1;
 	right |= (packet[3] >> 1) & 1;
 	if (packet[0] == 0xff) {
Old 09-01-2004, 10:27 AM   #3
Registered: Aug 2004
Posts: 62

Original Poster
Rep: Reputation: 15

I have no idea how to apply such a patch. Any suggestions?



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