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

                                                                           libinput-measure-touchpad-pressure(1)