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)