https://bugs.freedesktop.org/show_bug.cgi?id=105535
Bug ID: 105535
Summary: SynPS/2 Synaptics TouchPad detects fingers not
touching the touchpad while using two-finger scrolling
Product: Wayland
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: libinput
Assignee: wayland-bugs@lists.freedesktop.org
Reporter: sergei.jakovlev...@gmail.com
Synaptics touchpad is way too sensitive when using libinput during two finger
scrolling - it detects fingers not touching the touchpad at all (2-3 mm away
from the surface). The behavior of the cursor itself when not scrolling seems
OK (it does not move when a finger is not touching the surface). The speed of
scrolling and cursor movement is also OK.
As per
https://wayland.freedesktop.org/libinput/doc/latest/touchpad_pressure.html I
tried to run "libinput measure touchpad-pressure", but it fails on my machine:
# libinput measure touchpad-pressure
Using SynPS/2 Synaptics TouchPad: /dev/input/event8
Error: device does not have ABS_MT_PRESSURE
I would like to ask for advice how to proceed. As far as I understand, there is
no user configurable sensitivity in libinput, and normal recommendation is to
use pressure measurement tool and file a bug report, but the tool fails on my
machine.
Other information required by bug reporting guidelines:
$ pacman -Ss libinput
extra/libinput 1.10.3-1 [installed]
Input device management and event handling library
extra/xf86-input-libinput 0.26.0-1 (xorg-drivers) [installed]
Generic input driver for the X.Org server based on libinput
$ xinput list-props "SynPS/2 Synaptics TouchPad"
Device 'SynPS/2 Synaptics TouchPad':
Device Enabled (140): 1
Coordinate Transformation Matrix (142): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Tapping Enabled (275): 1
libinput Tapping Enabled Default (276): 0
libinput Tapping Drag Enabled (277): 1
libinput Tapping Drag Enabled Default (278): 1
libinput Tapping Drag Lock Enabled (279): 0
libinput Tapping Drag Lock Enabled Default (280): 0
libinput Tapping Button Mapping Enabled (281): 1, 0
libinput Tapping Button Mapping Default (282): 1, 0
libinput Natural Scrolling Enabled (283): 0
libinput Natural Scrolling Enabled Default (284): 0
libinput Left Handed Enabled (285): 0
libinput Left Handed Enabled Default (286): 0
libinput Accel Speed (287): 0.000000
libinput Accel Speed Default (288): 0.000000
libinput Scroll Methods Available (289): 1, 1, 0
libinput Scroll Method En<code>abled (290): 1, 0, 0
libinput Scroll Method Enabled Default (291): 1, 0, 0
libinput Send Events Modes Available (260): 1, 1
libinput Send Events Mode Enabled (261): 0, 0
libinput Send Events Mode Enabled Default (262): 0, 0
libinput Disable While Typing Enabled (292): 1
libinput Disable While Typing Enabled Default (293): 1
Device Node (263): "/dev/input/event8"
Device Product ID (264): 2, 7
libinput Drag Lock Buttons (294): <no items>
libinput Horizontal Scroll Enabled (295): 1
Laptop: HP ProBook 4530s
$ cat /sys/class/dmi/id/modalias
dmi:bvnHewlett-Packard:bvr68SRRVer.F.63:bd04/06/2017:svnHewlett-Packard:pnHPProBook4530s:pvrA0000C02:rvnHewlett-Packard:rn167C:rvrKBCVersion22.26:cvnHewlett-Packard:ct10:cvr:
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