Provided by: xserver-xorg-input-synaptics_1.9.2-1ubuntu3_amd64 
NAME
synaptics - touchpad input driver
SYNOPSIS
Section "InputDevice"
Identifier "devname"
Driver "synaptics"
Option "Device" "devpath"
Option "Path" "path"
...
EndSection
DESCRIPTION
synaptics is an Xorg input driver for touchpads. Even though touchpads can be handled by
the normal evdev or mouse drivers, this driver allows more advanced features of the
touchpad to become available. Some benefits would be:
• Movement with adjustable, non-linear acceleration and speed.
• Button events through short touching of the touchpad.
• Double-Button events through double short touching of the touchpad.
• Dragging through short touching and holding down the finger on the touchpad (tap-and-
drag gesture).
• Middle and right button events on the upper and lower corner of the touchpad.
• Vertical scrolling (button four and five events) through moving the finger on the
right side of the touchpad.
• The up/down button sends button four/five events.
• Horizontal scrolling (button six and seven events) through moving the finger on the
lower side of the touchpad.
• The multi-buttons send button four/five events for vertical scrolling and button
six/seven events for horizontal scrolling.
• Adjustable finger detection.
• Multifinger taps: two finger for right button and three finger for middle button
events. (Needs hardware support. Not all models implement this feature.)
• Pressure-dependent motion speed.
Note that depending on the touchpad firmware, some of these features might be available
even without using the synaptics driver. Note also that some functions are not available
on all touchpad models, because they need support from the touchpad hardware/firmware.
(Multifinger taps for example.)
The name "synaptics" is historical and the driver still provides the synaptics protocol
parsing code. Under Linux however, the hardware-specifics are handled by the kernel and
this driver will work for any touchpad that has a working kernel driver. If your device is
recognized as "PS/2 Mouse" or similar, the kernel driver does not support your device and
this driver will only provide limited functionality.
CONFIGURATION OPTIONS
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 "Device" "string"
This option specifies the device file in your "/dev" directory which will be used
to access the physical device. Normally you should use something like
"/dev/input/eventX", where X is some integer.
Option "Protocol" "string"
Specifies which kernel driver will be used by this driver. This is the list of
supported drivers and their default use scenarios.
auto-dev automatic, default (recommend)
event Linux 2.6 kernel events
psaux raw device access (Linux 2.4)
psm FreeBSD psm driver
Option "LeftEdge" "integer"
X coordinate for left edge. Property: "Synaptics Edges"
Option "RightEdge" "integer"
X coordinate for right edge. Property: "Synaptics Edges"
Option "TopEdge" "integer"
Y coordinate for top edge. Property: "Synaptics Edges"
Option "BottomEdge" "integer"
Y coordinate for bottom edge. Property: "Synaptics Edges"
Option "FingerLow" "integer"
When finger pressure drops below this value, the driver counts it as a release.
Property: "Synaptics Finger"
Option "FingerHigh" "integer"
When finger pressure goes above this value, the driver counts it as a touch.
Property: "Synaptics Finger"
Option "MaxTapTime" "integer"
Maximum time (in milliseconds) for detecting a tap. Property: "Synaptics Tap
Durations"
Option "MaxTapMove" "integer"
Maximum movement of the finger for detecting a tap. Property: "Synaptics Tap Move"
Option "MaxDoubleTapTime" "integer"
Maximum time (in milliseconds) for detecting a double tap. Property: "Synaptics Tap
Durations"
Option "ClickTime" "integer"
The duration of the mouse click generated by tapping. Property: "Synaptics Tap
Durations"
Option "ClickPad" "boolean"
Whether the device is a click pad. See ClickPad support for more details. Property:
"Synaptics ClickPad"
Option "VertEdgeScroll" "boolean"
Enable vertical scrolling when dragging along the right edge. Property: "Synaptics
Edge Scrolling"
Option "HorizEdgeScroll" "boolean"
Enable horizontal scrolling when dragging along the bottom edge. Property:
"Synaptics Edge Scrolling"
Option "CornerCoasting" "boolean"
Enable edge scrolling to continue while the finger stays in an edge corner.
Property: "Synaptics Edge Scrolling"
Option "VertTwoFingerScroll" "boolean"
Enable vertical scrolling when dragging with two fingers anywhere on the touchpad.
Property: "Synaptics Two-Finger Scrolling"
Option "HorizTwoFingerScroll" "boolean"
Enable horizontal scrolling when dragging with two fingers anywhere on the
touchpad. Property: "Synaptics Two-Finger Scrolling"
Option "VertScrollDelta" "integer"
Move distance of the finger for a scroll event. Property: "Synaptics Scrolling
Distance"
Option "HorizScrollDelta" "integer"
Move distance of the finger for a scroll event. Property: "Synaptics Scrolling
Distance"
Option "MinSpeed" "float"
Minimum speed factor. Property: "Synaptics Move Speed"
Option "MaxSpeed" "float"
Maximum speed factor. Property: "Synaptics Move Speed"
Option "AccelFactor" "float"
Acceleration factor for normal pointer movements. Property: "Synaptics Move Speed"
Option "PressureMotionMinZ" "integer"
Finger pressure at which minimum pressure motion factor is applied. Property:
"Synaptics Pressure Motion"
Option "PressureMotionMaxZ" "integer"
Finger pressure at which maximum pressure motion factor is applied. Property:
"Synaptics Pressure Motion"
Option "PressureMotionMinFactor" "integer"
Lowest setting for pressure motion factor. Property: "Synaptics Pressure Motion
Factor"
Option "PressureMotionMaxFactor" "integer"
Greatest setting for pressure motion factor. Property: "Synaptics Pressure Motion
Factor"
Option "HorizHysteresis" "integer"
The minimum horizontal HW distance required to generate motion events. Can be
specified as a percentage. Increase if noise motion is a problem for you. Zero is
disabled. Default: 0.5 percent of the diagonal or (in case of evdev) the
appropriate "fuzz" as advertised by the device.
Option "VertHysteresis" "integer"
The minimum vertical HW distance required to generate motion events. See
HorizHysteresis.
Option "UpDownScrolling" "boolean"
If on, the up/down buttons generate button 4/5 events. If off, the up button
generates a double click and the down button generates a button 2 event. This
option is only available for touchpads with physical scroll buttons. Property:
"Synaptics Button Scrolling"
Option "LeftRightScrolling" "boolean"
If on, the left/right buttons generate button 6/7 events. If off, the left/right
buttons both generate button 2 events. This option is only available for touchpads
with physical scroll buttons. Property: "Synaptics Button Scrolling"
Option "UpDownScrollRepeat" "boolean"
If on, and the up/down buttons are used for scrolling (UpDownScrolling), these
buttons will send auto-repeating 4/5 events, with the delay between repeats
determined by ScrollButtonRepeat. This option is only available for touchpads with
physical scroll buttons. Property: "Synaptics Button Scrolling Repeat"
Option "LeftRightScrollRepeat" "boolean"
If on, and the left/right buttons are used for scrolling (LeftRightScrolling),
these buttons will send auto-repeating 6/7 events, with the delay between repeats
determined by ScrollButtonRepeat. This option is only available for touchpads with
physical scroll buttons. Property: "Synaptics Button Scrolling Repeat"
Option "ScrollButtonRepeat" "integer"
The number of milliseconds between repeats of button events 4-7 from the
up/down/left/right scroll buttons. This option is only available for touchpads
with physical scroll buttons. Property: "Synaptics Button Scrolling Time"
Option "EmulateMidButtonTime" "integer"
Maximum time (in milliseconds) for middle button emulation. Property: "Synaptics
Middle Button Timeout"
Option "EmulateTwoFingerMinZ" "integer"
For touchpads not capable of detecting multiple fingers but are capable of
detecting finger pressure and width, this sets the Z pressure threshold. When both
Z pressure and W width thresholds are crossed, a two finger press will be emulated.
This defaults to a value that disables emulation on touchpads with real two-finger
detection and defaults to a value that enables emulation on remaining touchpads
that support pressure and width support. Property: "Synaptics Two-Finger Pressure"
Option "EmulateTwoFingerMinW" "integer"
For touchpads not capable of detecting multiple fingers but are capable of
detecting finger width and pressure, this sets the W width threshold. When both W
width and Z pressure thresholds are crossed, a two finger press will be emulated.
This feature works best with (PalmDetect) off. Property: "Synaptics Two-Finger
Width"
Option "TouchpadOff" "integer"
Switch off the touchpad. Valid values are:
0 Touchpad is enabled
1 Touchpad is switched off (physical clicks still work)
2 Only tapping and scrolling is switched off
When the touchpad is switched off, button events caused by a physical button press
are still interpreted. On a ClickPad, this includes software-emulated middle and
right buttons as defined by the SoftButtonAreas setting.
Property: "Synaptics Off"
Option "LockedDrags" "boolean"
If off, a tap-and-drag gesture ends when you release the finger. If on, the
gesture is active until you tap a second time, or until LockedDragTimeout expires.
Property: "Synaptics Locked Drags"
Option "LockedDragTimeout" "integer"
This parameter specifies how long it takes (in milliseconds) for the LockedDrags
mode to be automatically turned off after the finger is released from the touchpad.
Property: "Synaptics Locked Drags Timeout"
Option "RTCornerButton" "integer"
Which mouse button is reported on a right top corner tap. Set to 0 to disable.
Property: "Synaptics Tap Action"
Option "RBCornerButton" "integer"
Which mouse button is reported on a right bottom corner tap. Set to 0 to disable.
Property: "Synaptics Tap Action"
Option "LTCornerButton" "integer"
Which mouse button is reported on a left top corner tap. Set to 0 to disable.
Property: "Synaptics Tap Action"
Option "LBCornerButton" "integer"
Which mouse button is reported on a left bottom corner tap. Set to 0 to disable.
Property: "Synaptics Tap Action"
Option "TapButton1" "integer"
Which mouse button is reported on a non-corner one-finger tap. Set to 0 to
disable. Property: "Synaptics Tap Action"
Option "TapButton2" "integer"
Which mouse button is reported on a non-corner two-finger tap. Set to 0 to
disable. Property: "Synaptics Tap Action"
Option "TapButton3" "integer"
Which mouse button is reported on a non-corner three-finger tap. Set to 0 to
disable. Property: "Synaptics Tap Action"
Option "ClickFinger1" "integer"
Which mouse button is reported when left-clicking with one finger. Set to 0 to
disable. Property: "Synaptics Click Action"
Option "ClickFinger2" "integer"
Which mouse button is reported when left-clicking with two fingers. Set to 0 to
disable. Property: "Synaptics Click Action"
Option "ClickFinger3" "integer"
Which mouse button is reported when left-clicking with three fingers. Set to 0 to
disable. Property: "Synaptics Click Action"
Option "CircularScrolling" "boolean"
If on, circular scrolling is used. Property: "Synaptics Circular Scrolling"
Option "CircScrollDelta" "float"
Move angle (radians) of finger to generate a scroll event. Property: "Synaptics
Circular Scrolling Distance"
Option "CircScrollTrigger" "integer"
Trigger region on the touchpad to start circular scrolling
0 All Edges
1 Top Edge
2 Top Right Corner
3 Right Edge
4 Bottom Right Corner
5 Bottom Edge
6 Bottom Left Corner
7 Left Edge
8 Top Left Corner
Property: "Synaptics Circular Scrolling Trigger"
Option "CircularPad" "boolean"
Instead of being a rectangle, the edge is the ellipse enclosed by the
Left/Right/Top/BottomEdge parameters. For circular touchpads. Property: "Synaptics
Circular Pad"
Option "PalmDetect" "boolean"
If palm detection should be enabled. Note that this also requires
hardware/firmware support from the touchpad. Property: "Synaptics Palm Detection"
Option "PalmMinWidth" "integer"
Minimum finger width at which touch is considered a palm. Property: "Synaptics Palm
Dimensions"
Option "PalmMinZ" "integer"
Minimum finger pressure at which touch is considered a palm. Property: "Synaptics
Palm Dimensions"
Option "CoastingSpeed" "float"
Your finger needs to produce this many scrolls per second in order to start
coasting. The default is 20 which should prevent you from starting coasting
unintentionally. 0 disables coasting. Property: "Synaptics Coasting Speed"
Option "CoastingFriction" "float"
Number of scrolls/second² to decrease the coasting speed. Default is 50.
Property: "Synaptics Coasting Speed"
Option "SingleTapTimeout" "integer"
Timeout after a tap to recognize it as a single tap. Property: "Synaptics Tap
Durations"
Option "GrabEventDevice" "boolean"
If GrabEventDevice is true, the driver will grab the event device for exclusive use
when using the linux 2.6 event protocol. When using other protocols, this option
has no effect. Grabbing the event device means that no other user space or kernel
space program sees the touchpad events. This is desirable if the X config file
includes /dev/input/mice as an input device, but is undesirable if you want to
monitor the device from user space. When changing this parameter with the
synclient program, the change will not take effect until the synaptics driver is
disabled and re-enabled. This can be achieved by switching to a text console and
then switching back to X.
Option "TapAndDragGesture" "boolean"
Switch on/off the tap-and-drag gesture. This gesture is an alternative way of
dragging. It is performed by tapping (touching and releasing the finger), then
touching again and moving the finger on the touchpad. The gesture is enabled by
default and can be disabled by setting the TapAndDragGesture option to false.
Property: "Synaptics Gestures"
Option ®esolutionDetect" "" boolean "
Allow or prevent the synaptics driver from reporting the size of the touchpad to
the X server. The X server normally uses this information to scale movements so
that touchpad movement corresponds visually to mouse cursor movements on the
screen. However, in some rare cases where the touchpad height/width ratio is
significantly different from the laptop, it can cause the mouse cursor to skip
pixels in the X or Y axis. This option allows disabling this scaling behavior,
which can provide smoother mouse movement in such cases. Property: "Synaptics
Resolution Detect"
Option "VertResolution" "integer"
Resolution of X coordinates in units/millimeter. The value is used together with
HorizResolution to compensate unequal vertical and horizontal sensitivity. Setting
VertResolution and HorizResolution equal values means no compensation. Default
value is read from the touchpad or set to 1 if value could not be read. Property:
"Synaptics Pad Resolution"
Option "HorizResolution" "integer"
Resolution of Y coordinates in units/millimeter. The value is used together with
VertResolution to compensate unequal vertical and horizontal sensitivity. Setting
VertResolution and HorizResolution equal values means no compensation. Default
value is read from the touchpad or set to 1 if value could not be read. Property:
"Synaptics Pad Resolution"
Option "AreaLeftEdge" "integer"
Ignore movements, scrolling and tapping which start left of this edge. The option
is disabled by default and can be enabled by setting the AreaLeftEdge option to any
integer value other than zero. If supported by the server (version 1.9 and later),
the edge may be specified in percent of the total width of the touchpad. Property:
"Synaptics Area"
Option "AreaRightEdge" "integer"
Ignore movements, scrolling and tapping which start right of this edge. The option
is disabled by default and can be enabled by setting the AreaRightEdge option to
any integer value other than zero. If supported by the server (version 1.9 and
later), the edge may be specified in percent of the total width of the touchpad.
Property: "Synaptics Area"
Option "AreaTopEdge" "integer"
Ignore movements, scrolling and tapping which start above this edge. The option is
disabled by default and can be enabled by setting the AreaTopEdge option to any
integer value other than zero. If supported by the server (version 1.9 and later),
the edge may be specified in percent of the total height of the touchpad. Property:
"Synaptics Area"
Option "AreaBottomEdge" "integer"
Ignore movements, scrolling and tapping which start below this edge. The option is
disabled by default and can be enabled by setting the AreaBottomEdge option to any
integer value other than zero. If supported by the server (version 1.9 and later),
the edge may be specified in percent of the total height of the touchpad. Property:
"Synaptics Area"
Option "SoftButtonAreas" "RBL RBR RBT RBB MBL MBR MBT MBB"
This option is only available on ClickPad devices. Enable soft button click area
support on ClickPad devices. The first four parameters are the left, right, top,
bottom edge of the right button, respectively, the second four parameters are the
left, right, top, bottom edge of the middle button, respectively. Any of the values
may be given as percentage of the touchpad width or height, whichever applies. If
any edge is set to 0 (not 0%), the button is assumed to extend to infinity in the
given direction. Setting all values to 0 (not 0%) disables soft button areas.
Button areas may not overlap, however it is permitted for two buttons to share an
edge value. Property: "Synaptics Soft Button Areas"
Option "HasSecondarySoftButtons" "boolean"
This option is only available on ClickPad devices. Enable the secondary software
button area support. The exact area must be set in option
"SecondarySoftButtonAreas". See ClickPad support for more details.
Option "SecondarySoftButtonAreas" "RBL RBR RBT RBB MBL MBR MBT MBB"
This option is only available on ClickPad devices and only if Option
"HasSecondarySoftButtons" is enabled. Define the secondary soft button click areas
on ClickPad devices (usually on top of the device). For the allowed values for
this option, see Option "SoftButtonAreas". Primary and secondary soft button areas
must not overlap each other. If they do, the behavior of the driver is undefined.
Property: "Synaptics Secondary Soft Button Areas". This property is only
initialized if Option "HasSecondarySoftButtons" is enabled and this option is set
in the xorg.conf(5).
CONFIGURATION DETAILS
Area handling
The LeftEdge, RightEdge, TopEdge and BottomEdge parameters are used to define the edge and
corner areas of the touchpad. The parameters split the touchpad area in 9 pieces, like
this:
│ │
│ LeftEdge │ RightEdge
┌─────└─────────────└───┐ Physical top edge
│ 1 │ 2 │ 3 │
└─────└─────────────└───┘ TopEdge
│ │ │ │
│ 4 │ 5 │ 6 │
│ │ │ │
└─────└─────────────└───┘ BottomEdge
│ 7 │ 8 │ 9 │
└─────└─────────────└───┘ Physical bottom edge
│Physical left edge │ Physical right edge
Coordinates to the left of LeftEdge are part of the left edge (areas 1, 4 and 7),
coordinates to the left of LeftEdge and above TopEdge (area 1) are part of the upper left
corner, etc.
A good way to find appropriate edge parameters is to use evtest(1) on the device to see
the x/y coordinates corresponding to different positions on the touchpad.
The perceived physical edges may be adjusted with the AreaLeftEdge, AreaRightEdge,
AreaTopEdge, and AreaBottomEdge options. If these values are set to something other than
the physical edges, input that starts in the space between the area edge and the
respective physical edge is ignored. Note that this reduces the available space on the
touchpad to start motions in.
Tapping
A tap event happens when the finger is touched and released in a time interval shorter
than MaxTapTime, and the touch and release coordinates are less than MaxTapMove units
apart. A "touch" event happens when the Z value goes above FingerHigh, and an "untouch"
event happens when the Z value goes below FingerLow.
The MaxDoubleTapTime parameter has the same function as the MaxTapTime parameter, but for
the second, third, etc tap in a tap sequence. If you can't perform double clicks fast
enough (for example, xmms depends on fast double clicks), try reducing this parameter. If
you can't get word selection to work in xterm (ie button down, button up, button down,
move mouse), try increasing this parameter.
The ClickTime parameter controls the delay between the button down and button up X events
generated in response to a tap event. A too long value can cause undesirable autorepeat
in scroll bars and a too small value means that visual feedback from the gui application
you are interacting with is harder to see.
Acceleration
The MinSpeed, MaxSpeed and AccelFactor parameters control the pointer motion speed. The
speed value defines the scaling between touchpad coordinates and screen coordinates. When
moving the finger very slowly, the MinSpeed value is used, when moving very fast the
MaxSpeed value is used. When moving the finger at moderate speed, you get a pointer
motion speed somewhere between MinSpeed and MaxSpeed. If you don't want any acceleration,
set MinSpeed and MaxSpeed to the same value.
The MinSpeed, MaxSpeed and AccelFactor parameters don't have any effect on scrolling
speed. Scrolling speed is determined solely from the VertScrollDelta and HorizScrollDelta
parameters. To invert the direction of vertical or horizontal scrolling, set
VertScrollDelta or HorizScrollDelta to a negative value.
Acceleration is mostly handled outside the driver, thus the driver will translate MinSpeed
into constant deceleration and adapt MaxSpeed at startup time. This ensures you can user
the other acceleration profiles, albeit without pressure motion. However the numbers at
runtime will likely be different from any options you may have set.
Pressure motion
When pressure motion is activated, the cursor motion speed depends on the pressure exerted
on the touchpad (the more pressure exerted on the touchpad, the faster the pointer). More
precisely the speed is first calculated according to MinSpeed, MaxSpeed and AccelFactor,
and then is multiplied by a sensitivity factor.
The sensitivity factor can be adjusted using the PressureMotion parameters. If the
pressure is below PressureMotionMinZ, PressureMotionMinFactor is used, and if the pressure
is greater than PressureMotionMaxZ, PressureMotionMaxFactor is used. For a pressure value
between PressureMotionMinZ and PressureMotionMaxZ, the factor is increased linearly.
Middle button emulation
Since most synaptics touchpad models don't have a button that corresponds to the middle
button on a mouse, the driver can emulate middle mouse button events. If you press both
the left and right mouse buttons at almost the same time (no more than
EmulateMidButtonTime milliseconds apart) the driver generates a middle mouse button event.
Circular scrolling
Circular scrolling acts like a scrolling wheel on the touchpad. Scrolling is engaged when
a drag starts in the given CircScrollTrigger region, which can be all edges, a particular
side, or a particular corner. Once scrolling is engaged, moving your finger in clockwise
circles around the center of the touchpad will generate scroll down events and counter
clockwise motion will generate scroll up events. Lifting your finger will disengage
circular scrolling. Use tight circles near the center of the pad for fast scrolling and
large circles for better control. When used together with vertical scrolling, hitting the
upper or lower right corner will seamlessly switch over from vertical to circular
scrolling.
Coasting
Coasting is enabled by setting the CoastingSpeed parameter to a non-zero value. Coasting
comes in two flavors: conventional (finger off) coasting, and corner (finger on) coasting.
Conventional coasting is enabled when coasting is enabled, and CornerCoasting is set to
false. When conventional coasting is enabled, horizontal/vertical scrolling can continue
after the finger is released from the lower/right edge of the touchpad. The driver
computes the scrolling speed corresponding to the finger speed immediately before the
finger leaves the touchpad. If this scrolling speed is larger than the CoastingSpeed
parameter (measured in scroll events per second), the scrolling will continue with the
same speed in the same direction until the finger touches the touchpad again.
Corner coasting is enabled when coasting is enabled, and CornerCoasting is set to true.
When corner coasting is enabled, edge scrolling can continue as long as the finger stays
in a corner. Coasting begins when the finger enters the corner, and continues until the
finger leaves the corner. CornerCoasting takes precedence over the seamless switch from
edge scrolling to circular scrolling. That is, if CornerCoasting is active, scrolling
will stop, and circular scrolling will not start, when the finger leaves the corner.
Noise cancellation
The synaptics has a built-in noise cancellation based on hysteresis. This means that
incoming coordinates actually shift a box of predefined dimensions such that it covers the
incoming coordinate, and only the boxes own center is used as input. Obviously, the
smaller the box the better, but the likelihood of noise motion coming through also
increases.
ClickPad support
A click pad device has button(s) integrated into the touchpad surface. The user must press
downward on the touchpad in order to generated a button press. ClickPad support is enabled
if the option ClickPad is set or the property is set at runtime. On some platforms, this
option will be set automatically if the kernel detects a matching device. On Linux, the
device must have the INPUT_PROP_BUTTONPAD property set.
ClickPads do not support middle mouse button emulation. If enabling ClickPad support at
runime, the user must also set the middle mouse button timeout to 0. If auto-detected,
middle mouse button emulation is disabled by the driver.
ClickPads provide software emulated buttons through Option "SoftButtonAreas". These
buttons enable areas on the touchpad to perform as right or middle mouse button. When the
user performs a click within a defined soft button area, a right or middle click is
performed.
Some laptops, most notably the Lenovo T440, T540 and x240 series, provide a pointing stick
without physical buttons. On those laptops, the top of the touchpad acts as software-
emulated button area. This area can be enabled with Option "HasSecondarySoftButtons" and
configured with Option "SecondarySoftButtonAreas". On some platforms, this option will be
set automatically if the kernel detects a matching device. On Linux, the device must have
the INPUT_PROP_TOPBUTTONPAD property set.
DEVICE PROPERTIES
Synaptics 1.0 and higher support input device properties if the driver is running on X
server 1.6 or higher. The synclient tool shipped with synaptics version 1.1 uses input
device properties by default. Properties supported:
Synaptics Edges
32 bit, 4 values, left, right, top, bottom.
Synaptics Finger
32 bit, 3 values, low, high, press.
Synaptics Tap Time
32 bit.
Synaptics Tap Move
32 bit.
Synaptics Tap Durations
32 bit, 3 values, single touch timeout, max tapping time for double taps, duration
of a single click.
Synaptics ClickPad
8 bit (Bool).
Synaptics Middle Button Timeout
32 bit.
Synaptics Two-Finger Pressure
32 bit.
Synaptics Two-Finger Width
32 bit.
Synaptics Scrolling Distance
32 bit, 2 values, vert, horiz.
Synaptics Edge Scrolling
8 bit (BOOL), 3 values, vertical, horizontal, corner.
Synaptics Two-Finger Scrolling
8 bit (BOOL), 2 values, vertical, horizontal.
Synaptics Move Speed
FLOAT, 4 values, min, max, accel, <deprecated>
Synaptics Button Scrolling
8 bit (BOOL), 2 values, updown, leftright.
Synaptics Button Scrolling Repeat
8 bit (BOOL), 2 values, updown, leftright.
Synaptics Button Scrolling Time
32 bit.
Synaptics Off
8 bit, valid values (0, 1, 2).
Synaptics Locked Drags
8 bit (BOOL).
Synaptics Locked Drags Timeout
32 bit.
Synaptics Tap Action
8 bit, up to MAX_TAP values (see synaptics.h), 0 disables an element. order: RT,
RB, LT, LB, F1, F2, F3.
Synaptics Click Action
8 bit, up to MAX_CLICK values (see synaptics.h), 0 disables an element. order:
Finger 1, 2, 3.
Synaptics Circular Scrolling
8 bit (BOOL).
Synaptics Circular Scrolling Distance
FLOAT.
Synaptics Circular Scrolling Trigger
8 bit, valid values 0..8 (inclusive) order: any edge, top, top + right, right,
right + bottom, bottom, bottom + left, left, left + top.
Synaptics Circular Pad
8 bit (BOOL).
Synaptics Palm Detection
8 bit (BOOL).
Synaptics Palm Dimensions
32 bit, 2 values, width, z.
Synaptics Coasting Speed
FLOAT, 2 values, speed, friction.
Synaptics Pressure Motion
32 bit, 2 values, min, max.
Synaptics Pressure Motion Factor
FLOAT, 2 values, min, max.
Synaptics Resolution Detect
8 bit (BOOL).
Synaptics Grab Event Device
8 bit (BOOL).
Synaptics Gestures
8 bit (BOOL), 1 value, tap-and-drag.
Synaptics Area
The AreaLeftEdge, AreaRightEdge, AreaTopEdge and AreaBottomEdge parameters are used
to define the edges of the active area of the touchpad. All movements, scrolling
and tapping which take place outside of this area will be ignored. This property is
disabled by default.
32 bit, 4 values, left, right, top, bottom. 0 disables an element.
Synaptics Soft Button Areas
This property is only available on ClickPad devices. The Right and middle soft
button areas are used to support right and middle click actions on a ClickPad
device. Providing 0 for all values of a given button disables the button area.
32 bit, 8 values, RBL, RBR, RBT, RBB, MBL, MBR, MBT, MBB.
Synaptics Capabilities
This read-only property expresses the physical capability of the touchpad, most
notably whether the touchpad hardware supports multi-finger tapping and scrolling.
8 bit (BOOL), 7 values (read-only), has left button, has middle button, has right
button, two-finger detection, three-finger detection, pressure detection, and
finger/palm width detection.
Synaptics Pad Resolution
32 bit unsigned, 2 values (read-only), vertical, horizontal in units/millimeter.
NOTES
Configuration through InputClass sections is recommended in X servers 1.8 and later. See
xorg.conf.d(5) for more details. An example xorg.conf.d snippet is provided in
${sourcecode}/conf/70-synaptics.conf
Configuration through hal fdi files is recommended in X servers 1.5, 1.6 and 1.7. An
example hal policy file is provided in ${sourcecode}/conf/11-x11-synaptics.fdi
If either of Protocol "auto-dev" (default) or Protocol "event" is used, the driver
initializes defaults based on the capabilities reported by the kernel driver.
Acceleration, edges and resolution are based on the dimensions reported by the kernel. If
the kernel reports multi-finger detection, two-finger vertical scrolling is enabled,
horizontal two-finger scrolling is disabled and edge scrolling is disabled. If no multi-
finger capabilities are reported, edge scrolling is enabled for both horizontal and
vertical scrolling. Tapping is disabled by default for touchpads with one or more
physical buttons. To enable it you need to map tap actions to buttons. See the
"TapButton1", "TapButton2" and "TapButton3" options.
Button mapping for physical buttons is handled in the server. If the device is switched
to left-handed (an in-server mapping of physical buttons 1, 2, 3 to the logical buttons 3,
2, 1, respectively), both physical and TapButtons are affected. To counteract this, the
TapButtons need to be set up in reverse order (TapButton1=3, TapButton2=1).
REMOVED OPTIONS
The following options are no longer part of the driver configuration:
Option "Repeater" "string"
Option "HistorySize" "integer"
Option "SpecialScrollAreaRight" "boolean"
Option "GuestMouseOff" "boolean"
Option "SHMConfig" "boolean"
Option "FingerPress" "integer"
Option "TrackstickSpeed" "float"
Option "EdgeMotionMinZ" "integer"
Option "EdgeMotionMaxZ" "integer"
Option "EdgeMotionMinSpeed" "integer"
Option "EdgeMotionMaxSpeed" "integer"
Option "EdgeMotionUseAlways" "boolean"
AUTHORS
Peter Osterlund <petero2@telia.com> and many others.
SEE ALSO
Xorg(1), xorg.conf(5), Xserver(1), X(7), synclient(1), syndaemon(1)