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Disable negative pressure transition on non-synaptics pads to avoid

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jerky movement (#1335249)
This commit is contained in:
Peter Hutterer 2016-05-19 16:07:12 +10:00
parent edf33a01f9
commit 40762142f0
2 changed files with 54 additions and 1 deletions
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46
0001-touchpad-only-use-negative-pressure-change-check-on-.patch Normal file
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@ -0,0 +1,46 @@
From 2f5231cc88fccf389a78270d827f6c9201b86794 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Wed, 18 May 2016 07:35:36 +1000
Subject: [PATCH libinput] touchpad: only use negative pressure change check on
Lenovo *50 and *60 series
This was introduced for bug 94379 - an X1 Carbon 3rd. Other touchpads have
different pressure change ranges, causing this condition to trigger
randomly and resulting in a jerky pointer motion.
For now, reduce the check to the *50 and *60 series touchpads until we have
data for more touchpads that we can add one-by-one.
https://bugs.freedesktop.org/show_bug.cgi?id=95393
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
---
src/evdev-mt-touchpad.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
index 4c8c3a3..c854043 100644
--- a/src/evdev-mt-touchpad.c
+++ b/src/evdev-mt-touchpad.c
@@ -928,6 +928,7 @@ tp_detect_jumps(const struct tp_dispatch *tp, struct tp_touch *t)
static void
tp_process_state(struct tp_dispatch *tp, uint64_t time)
{
+ struct evdev_device *device = tp->device;
struct tp_touch *t;
unsigned int i;
bool restart_filter = false;
@@ -953,7 +954,8 @@ tp_process_state(struct tp_dispatch *tp, uint64_t time)
if (!t->dirty)
continue;
- if (t->pressure_delta < -7)
+ if ((device->model_flags & EVDEV_MODEL_LENOVO_T450_TOUCHPAD) &&
+ t->pressure_delta < -7)
tp_motion_history_reset(t);
if (tp_detect_jumps(tp, t)) {
--
2.7.4

9
libinput.spec
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@ -5,7 +5,7 @@
Name: libinput
Version: 1.3.0
Release: 1%{?gitdate:.%{gitdate}git%{gitversion}}%{?dist}
Release: 2%{?gitdate:.%{gitdate}git%{gitversion}}%{?dist}
Summary: Input device library
License: MIT
@ -21,6 +21,9 @@ Source0: http://www.freedesktop.org/software/libinput/libinput-%{version}
# Not upstream, keep until kernel 4.2 or 4.1.x with dbf3c37086
Patch01: 0001-touchpad-serial-synaptics-need-to-fake-new-touches-o.patch
# https://bugzilla.redhat.com/show_bug.cgi?id=1335249
Patch02: 0001-touchpad-only-use-negative-pressure-change-check-on-.patch
BuildRequires: git
BuildRequires: autoconf automake libtool pkgconfig
BuildRequires: libevdev-devel
@ -97,6 +100,10 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
%changelog
* Thu May 19 2016 Peter Hutterer <peter.hutterer@redhat.com> 1.3.0-2
- Disable negative pressure transition on non-synaptics pads to avoid
jerky movement (#1335249)
* Tue May 10 2016 Peter Hutterer <peter.hutterer@redhat.com> 1.3.0-1
- libinput 1.3.0