"Two-finger scrolling" option does nothing w/my Synaptic pad

Asked by Daniel Fletcher on 2012-01-20

In Ubuntu 11.10/12.04 under Unity, along with any distro I've tried using Gnome3 (Arch, OpenSuse, Fedora) and even in LoliOS and BackTrack 5R1, the "Two-finger scrolling" option in mouse settings only disables side scroll and doesn't enable two-finger scrolling. I have to create a 50-synaptics.conf file in the appropriate directory for the distro with the following:

Section "InputClass"
  Identifier "touchpad catchall"
  Driver "synaptics"
  MatchIsTouchpad "on"
    # Enable touchpad
    Option "TouchpadOff" "0"
    # Edge Limits
    Option "LeftEdge" "1752"
    Option "RightEdge" "5192"
    Option "TopEdge" "1620"
    Option "BottomEdge" "4236"
    # Speed
    Option "MinSpeed" "01"
    Option "MaxSpeed" "1.75"
    Option "AccelFactor" "0.0398089"
    # Pressure
    Option "FingerLow" "25"
    Option "FingerHigh" "30"
    Option "FingerPress" "256"
    # Tapping Detection
    Option "MaxTapTime" "180" # 0 disables tap
    Option "MaxTapMove" "221"
    Option "MaxDoubleTapTime" "180"
    Option "SingleTapTimeout" "180"
    Option "ClickTime" "100"
    Option "FastTaps" "0"
    # Tapping as Buttons (number of fingers)
    Option "TapButton1" "1"
    Option "TapButton2" "2"
    Option "TapButton3" "3"
    # Tap Dragging
    Option "LockedDrags" "0"
    Option "LockedDragTimeout" "5000"
    # Tap Gesture Dragging
    Option "TapAndDragGesture" "1"
    # Corner Tap Buttons
    Option "RTCornerButton" "0"
    Option "RBCornerButton" "0"
    Option "LTCornerButton" "0"
    Option "LBCornerButton" "0"
    # Scrolling Edges
    Option "VertEdgeScroll" "on"
    Option "VertScrollDelta" "100"
    Option "HorizEdgeScroll" "0"
    Option "HorizScrollDelta" "100"
    # Circular Scrolling
    Option "CircularScrolling" "0"
    Option "CircScrollDelta" "0.1"
    Option "CircScrollTrigger" "0"
    # Two Finger Scrolling
    Option "VertTwoFingerScroll" "on"
    Option "HorizTwoFingerScroll" "on"
    # Corner Coasting
    Option "CornerCoasting" "0"
    Option "CoastingSpeed" "20"
    Option "CoastingFriction" "50"
    # Kernel Event Protocol
    Option "GrabEventDevice" "1"
    # Edge Ignore Boundaries
    Option "AreaLeftEdge" "0"
    Option "AreaRightEdge" "0"
    Option "AreaTopEdge" "0"
    Option "AreaBottomEdge" "0"
    # Trackstick
    Option "TrackstickSpeed" "40"
    # Circular Trackpad
    Option "CircularPad" "0"
    # Multi-function Buttons
    Option "ClickFinger1" "1"
    Option "ClickFinger2" "1"
    Option "ClickFinger3" "1"
    # Edge Movements
    Option "EdgeMotionMinZ" "29"
    Option "EdgeMotionMaxZ" "159"
    Option "EdgeMotionMinSpeed" "1"
    Option "EdgeMotionMaxSpeed" "401"
    Option "EdgeMotionUseAlways" "0"
    # Pressure Motion
    Option "PressureMotionMinZ" "29"
    Option "PressureMotionMaxZ" "159"
    Option "PressureMotionMinFactor" "1"
    Option "PressureMotionMaxFactor" "1"
    # Emulations
    Option "EmulateMidButtonTime" "75"
    Option "EmulateTwoFingerMinZ" "40"
    Option "EmulateTwoFingerMinW" "8"

This is with a Synaptic touchpad inside of an Aspire 6930G. I have also had to do it with synaptics pads on other systems.

Is this something to be opened up as a bug, or should I just manually fix on systems? Most of the options are unrelated and just tweaks, so only 4-6 of the lines are needed.

With just:

Section "InputClass"
  Identifier "touchpad catchall"
  Driver "synaptics"
  MatchIsTouchpad "on"
    # Enable touchpad
    Option "TouchpadOff" "0"
    # Scrolling Edges
    Option "VertEdgeScroll" "on"
    Option "VertScrollDelta" "100"
    Option "HorizEdgeScroll" "0"
    Option "HorizScrollDelta" "100"
    # Two Finger Scrolling
    Option "VertTwoFingerScroll" "on"
    Option "HorizTwoFingerScroll" "on"

I can then switch in real-time in mouse settings between edge and two-finger scroll. If anything maybe it would be safe to include those in the 51-synaptics-quirks.conf file, but then maybe I should be asking the x11 maintainers?

Question information

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Ubuntu xserver-xorg-input-synaptics Edit question
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ubuntu-bug xserver-xorg-input-synaptics

And it will start the process, hopefully others will find this and get fixed up


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