Provided by: xserver-xorg-input-evdev_2.2.5-1ubuntu6_i386 bug


       evdev - Generic Linux input driver


       Section "InputDevice"
         Identifier "devname"
         Driver "evdev"
         Option "Device"   "devpath"
         Option "Emulate3Buttons"     "True"
         Option "Emulate3Timeout"     "50"
         Option "GrabDevice"     "False"


       evdev  is  an  Xorg input driver for Linux´s generic event devices.  It
       therefore supports all input  devices  that  the  kernel  knows  about,
       including most mice and keyboards.

       The  evdev  driver  can  serve  as  both a pointer and a keyboard input
       device, and may be used as both the core keyboard and the core pointer.
       Multiple  input  devices  are  supported  by multiple instances of this
       driver, with one Load directive for evdev in the Module section of your
       xorg.conf for each input device that will use this driver.


       In  general,  any  input device that the kernel has a driver for can be
       accessed through the evdev driver.  See the Linux kernel  documentation
       for a complete list.


       Please  refer to xorg.conf(5) for general configuration details and for
       options that can be used with all input  drivers.   This  section  only
       covers configuration details specific to this driver.

       The following driver Options are supported:

       Option "ButtonMapping" "string"
              Sets the button mapping for this device. The mapping is a space-
              separated list of button mappings that correspond  in  order  to
              the physical buttons on the device (i.e. the first number is the
              mapping for button 1, etc.). The default mapping is "1 2  3  ...
              32". A mapping of 0 deactivates the button. Multiple buttons can
              have the same mapping.  For example, a  left-handed  mouse  with
              deactivated  scroll-wheel  would  use  a mapping of "3 2 1 0 0".
              Invalid mappings are ignored and the default  mapping  is  used.
              Buttons  not  specified  in  the  user’s mapping use the default

       Option "Device" "string"
              Specifies the device through which the device can  be  accessed.
              This  will generally be of the form "/dev/input/eventX", where X
              is some integer.  The mapping from device node  to  hardware  is

       Option "DragLockButtons" "L1 B2 L3 B4"
              Sets "drag lock buttons" that simulate holding a button down, so
              that low dexterity people do not have to hold a button  down  at
              the  same time they move a mouse cursor. Button numbers occur in
              pairs, with the lock button number occurring first, followed  by
              the  button  number  that  is  the  target  of  the lock button.
              Property: "Evdev Drag Lock Buttons".

       Option "DragLockButtons" "M1"
              Sets a "master drag lock button"  that  acts  as  a  "Meta  Key"
              indicating  that the next button pressed is to be "drag locked".
              Property: "Evdev Drag Lock Buttons".

       Option "Emulate3Buttons" "boolean"
              Enable/disable the emulation of the third (middle)  mouse
              button  for  mice  which  only have two physical buttons.
              The third button is emulated  by  pressing  both  buttons
              simultaneously.  Default: on, until a middle mouse button
              event  is  registered.  Property:  "Evdev  Middle  Button

       Option "Emulate3Timeout" "integer"
              Sets  the timeout (in milliseconds) that the driver waits
              before   deciding   if   two   buttons   where    pressed
              "simultaneously"  when  3  button  emulation  is enabled.
              Default: 50. Property:  "Evdev  Middle  Button  Timeout".
              Option  "EmulateWheel"  "boolean"  Enable/disable "wheel"
              emulation.   Wheel  emulation  means   emulating   button
              press/release  events  when  the  mouse  is moved while a
              specific real button is  pressed.   Wheel  button  events
              (typically   buttons  4  and  5)  are  usually  used  for
              scrolling.  Wheel emulation is useful for getting  wheel-
              like  behaviour  with  trackballs.  It can also be useful
              for mice with 4 or more buttons but no  wheel.   See  the
              description        of       the       EmulateWheelButton,
              EmulateWheelInertia,  EmulateWheelTimeout,  XAxisMapping,
              and  YAxisMapping options.  Default: off. Property "Evdev
              Wheel Emulation".

       Option "EmulateWheelButton" "integer"
              Specifies which button must be held down to enable  wheel
              emulation  mode.   While  this button is down, X and/or Y
              pointer  movement  will  generate  button   press/release
              events as specified for the XAxisMapping and YAxisMapping
              settings.  Default: 4. Property: "Evdev  Wheel  Emulation

       Option "EmulateWheelInertia" "integer"
              Specifies  how  far  (in pixels) the pointer must move to
              generate button press/release events in  wheel  emulation
              mode.   Default:  10.  Property:  "Evdev  Wheel Emulation

       Option "EmulateWheelTimeout" "integer"
              Specifies the time in milliseconds the EmulateWheelButton
              must be pressed before wheel emulation is started. If the
              EmulateWheelButton is released before this  timeout,  the
              original  button  press/release  event is sent.  Default:
              200. Property: "Evdev Wheel Emulation Timeout".

       Option "GrabDevice" "boolean"
              Force a grab on the event device. Doing  so  will  ensure
              that  no  other driver can initialise the same device and
              it will also stop  the  device  from  sending  events  to
              /dev/kbd or /dev/input/mice. Events from this device will
              not be sent  to  virtual  devices  (e.g.  rfkill  or  the
              Macintosh mouse button emulation).  Default: disabled.

       Option "InvertX" "Bool"

       Option "InvertY" "Bool"
              Invert  the  given  axis.  Default: off. Property: "Evdev
              Axis Inversion".

       Option "ReopenAttempts" "integer"
              Number of reopen attempts after a read  error  occurs  on
              the  device  (e.g.  after  waking  up  from  suspend). In
              between each attempt is a 100ms wait. Default: 10.

       Option "SwapAxes" "Bool"
              Swap x/y axes. Default: off. Property: "Evdev Axes Swap".

       Option "XAxisMapping" "N1 N2"
              Specifies  which  buttons  are  mapped to motion in the X
              direction in wheel emulation mode.  Button number  N1  is
              mapped to the negative X axis motion and button number N2
              is mapped to the positive X  axis  motion.   Default:  no
              mapping. Property: "Evdev Wheel Emulation Axes".

       Option "YAxisMapping" "N1 N2"
              Specifies  which  buttons  are  mapped to motion in the Y
              direction in wheel emulation mode.  Button number  N1  is
              mapped to the negative Y axis motion and button number N2
              is mapped to the positive Y axis motion.  Default: "4 5".
              Property: "Evdev Wheel Emulation Axes".


       The following properties are provided by the evdev driver.

       Evdev Axis Calibration
              4  32-bit  values,  order min-x, max-x, min-y, max-y or 0
              values to disable run-time axis calibration. This feature
              is required for devices that need to scale to a different
              coordinate system  than  originally  reported  to  the  X
              server,   such  as  touchscreens  that  require  run-time

       Evdev Axis Inversion
              2 boolean values (8 bit, 0 or 1), order X, Y.  1  inverts
              the axis.

       Evdev Axes Swap
              1 boolean value (8 bit, 0 or 1). 1 swaps x/y axes.

       Evdev Drag Lock Buttons
              8-bit.  Either  1  value  or pairs of values. Value range
              0-32, 0 disables a value.

       Evdev Middle Button Emulation
              1 boolean value (8 bit, 0 or 1).

       Evdev Middle Button Timeout
              1 16-bit positive value.

       Evdev Wheel Emulation
              1 boolean value (8 bit, 0 or 1).

       Evdev Wheel Emulation Axes
              4 8-bit values, order X up, X  down,  Y  up,  Y  down.  0
              disables a value.

       Evdev Wheel Emulation Button
              1 8-bit value, allowed range 0-32, 0 disables the button.

       Evdev Wheel Emulation Inertia
              1 16-bit positive value.

       Evdev Wheel Emulation Timeout
              1 16-bit positive value.


       Kristian Høgsberg.


       Xorg(1), xorg.conf(5), Xserver(1), X(7), README.mouse.