Provided by: libinput-tools_1.15.4-1_amd64 bug

NAME

       libinput-measure-touch-size - measure touch size and orientation of devices

SYNOPSIS

       libinput measure touch-size [--help] [options] [/dev/input/event0]

DESCRIPTION

       The  libinput  measure  touch-size  tool  measures  the size and orientation of a touch as
       provided by the kernel.  This is an interactive tool. When executed, the tool will  prompt
       the  user  to interact with the touch device. On termination, the tool prints a summary of
       the values seen. This data should be attached to any touch-size-related bug report.

       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 touch-capable device and uses that node.

       --help  Print help

       --touch-thresholds="down:up"
               Set the logical touch size thresholds to down and up, respectively. When  a  touch
               exceeds  the size in down it is considered logically down. If a touch is logically
               down and goes below the size 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.

       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-touch-size(1)