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libinput-measure-touchpad-pressure(1) FreeBSD General Commands Manual
NAME
libinput-measure-touchpad-pressure - measure pressure properties of
devices
SYNOPSIS
libinput measure touchpad-pressure [--help] [options]
[/dev/input/event0]
DESCRIPTION
The libinput measure touchpad-pressure tool measures the pressure of
touches on a touchpad. This is an interactive tool. When executed, the
tool will prompt the user to interact with the touchpad. On
termination, the tool prints a summary of the pressure values seen.
This data should be attached to any pressure-related bug report.
For a full description on how libinput's pressure-to-click behavior
works, see the online documentation here:
https://wayland.freedesktop.org/libinput/doc/latest/touchpad_pressure.html
and
https://wayland.freedesktop.org/libinput/doc/latest/palm_detection.html
This is a debugging tool only, its output may change at any time. Do
not rely on the output.
This tool usually needs to be run as root to have access to the
/dev/input/eventX nodes.
OPTIONS
If a device node is given, this tool opens that device node. Otherwise,
this tool searches for the first node that looks like a touchpad and
uses that node.
--help Print help
--touch-thresholds="down:up"
Set the logical touch pressure thresholds to down and up,
respectively. When a touch exceeds the pressure in down it is
considered logically down. If a touch is logically down and
goes below the pressure in up, it is considered logically up.
The thresholds have to be in device-specific pressure values
and it is required that down >= up.
--palm-threshold=N
Assume a palm threshold of N. The threshold has to be in
device-specific pressure values.
--thumb-threshold=N
Assume a thumb threshold of N. The threshold has to be in
device-specific pressure values.
If the touch-thresholds or the palm-threshold are not provided, this
tool uses the thresholds provided by the device quirks (if any) or the
built-in defaults.
LIBINPUT
Part of the libinput(1) suite