From: Pascal Wichmann <pascal.wichmann@pa-w.de>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [4.12 regression] Thinkpad X250 Touchpad and Trackpoint not recognized anymore; commit e839ffa: "Input: synaptics - add support for Intertouch devices"
Date: Fri, 19 May 2017 20:46:16 +0200 [thread overview]
Message-ID: <41de7f92-8d98-3266-5d28-28ba48c5da38@pa-w.de> (raw)
[-- Attachment #1.1: Type: text/plain, Size: 1346 bytes --]
Hello,
using the latest 4.12-rc1 kernel, the trackpoint and touchpad of my
Thinkpad X250 are not recognized.
This is caused by commit
e839ffa Input: synaptics - add support for Intertouch devices
The specific problem seems to be the detection of whether to use
synaptics_intertouch for the psmouse module or not. That parameter
is set to -1 by default, in which case synaptics_intertouch is
enabled on my device.
When I explicitly set that parameter to 0, the trackpoint and touchpad
are recognized and work as expected.
Removing my device from smbus_pnp_ids in 4.12 rc1 fixes the issue
without need to manually disable synaptics_intertouch in the psmouse
module:
diff -ruN a/drivers/input/mouse/synaptics.c
b/drivers/input/mouse/synaptics.c
--- a/drivers/input/mouse/synaptics.c 2017-05-19 19:31:48.930734395 +0200
+++ b/drivers/input/mouse/synaptics.c 2017-05-19 19:32:00.490782484 +0200
@@ -170,7 +170,6 @@
static const char * const smbus_pnp_ids[] = {
/* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
"LEN0048", /* X1 Carbon 3 */
- "LEN0046", /* X250 */
"LEN004a", /* W541 */
"LEN200f", /* T450s */
NULL
Is the ThinkPad X250 not supporting intertouch or is there another
problem causing the input devices not to work with it enabled?
Regards,
Pascal
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
next reply other threads:[~2017-05-19 18:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-19 18:46 Pascal Wichmann [this message]
2017-05-19 19:08 ` [4.12 regression] Thinkpad X250 Touchpad and Trackpoint not recognized anymore; commit e839ffa: "Input: synaptics - add support for Intertouch devices" Dmitry Torokhov
2017-05-19 19:37 ` Pascal Wichmann
2017-05-19 20:23 ` Dmitry Torokhov
2017-05-19 20:35 ` Pascal Wichmann
2017-05-19 20:49 ` Dmitry Torokhov
2017-05-20 5:47 ` Pascal Wichmann
2017-05-20 9:59 ` Benjamin Tissoires
2017-05-20 17:35 ` Dmitry Torokhov
2017-05-23 8:33 ` Benjamin Tissoires
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=41de7f92-8d98-3266-5d28-28ba48c5da38@pa-w.de \
--to=pascal.wichmann@pa-w.de \
--cc=benjamin.tissoires@redhat.com \
--cc=dmitry.torokhov@gmail.com \
--cc=linux-input@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).