NAME

       libevdev-tweak-device - modify an evdev kernel device

SYNOPSIS

       libevdev-tweak-device  --abs  ABS_X [--min a] [--max b] [--res c] [--fuzz d] [--flat e] /dev/input/eventX
       libevdev-tweak-device --resolution res[,yres] /dev/input/eventX

       libevdev-tweak-device --led LED_NUML --on|--off /dev/input/eventX

DESCRIPTION

       The libevdev-tweak-device tool changes the properties of the evdev kernel  device  at  /dev/input/eventX.
       Currently  this  may  be  used to force an LED on or off, or to change the properties of an absolute axis
       (e.g. its minimum/maximum range or resolution). Changes are permanent until the device is removed.

OPTIONS

   Changing absolute axes
       --abs axis
               Change the given named ABS_ kernel axis, e.g. ABS_X. For a full list, see linux/input.h.  Each of
               the options min, max, res, fuzz, flat may be given.

       --min v Set the absinfo minimum to the value v

       --max v Set the absinfo maximum to the value v

       --res v Set the absinfo resolution to the value v

       --fuzz v
               Set the absinfo fuzz to the value v

       --flat v
               Set the absinfo flat to the value v

   Changing the x/y resolution
       --resolution res[,yres]
               Changes the resolution of the ABS_X, ABS_MT_POSITION_X, ABS_Y, and ABS_MT_POSITION_Y axis to  the
               given resolution. If only one resolution value is provided, both x and y axis are set to the same
               resolution, otherwise the first resolution value is applied to the x axes and the second value to
               the y axes.

   Toggling LEDs
       --led led
               Change the given LED, e.g. LED_NUML. For a full list, see linux/input.h.

       --on    Change the LED state to on

       --off   Change the LED state to off

NOTES

       The  kernel  does  not  notify  processes about absinfo property changes. Any process that has previously
       obtained the absinfo from the device will remain on the old  information.  This  makes  using  this  tool
       potentially racy, use with caution.

                                                                                        LIBEVDEV-TWEAK-DEVICE(1)