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LIBEVDEV-TWEAK-DEVICE(1)    General Commands Manual   LIBEVDEV-TWEAK-DEVICE(1)

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 ker-
       nel 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 ap-
	       plied 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	poten-
       tially racy, use	with caution.

						      LIBEVDEV-TWEAK-DEVICE(1)

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