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libinput-m...d-pressure(1)   General Commands Manual  libinput-m...d-pressure(1)

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 at-
     tached 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/libin-
     put/doc/latest/touchpad-pressure.html     and     https://wayland.freedesk-
     top.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/in-
     put/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, respec-
	     tively. 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

						      libinput-m...d-pressure(1)

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