Ubuntu – How to speed down two-fingers trackpad scrolling

touchpadtrackpad

I move the arrow of touchpad speed bar to the left. Also, I tweak dconf editor's touchpad setting motion-acceleration, motion-threshold, etc.. and it didn't work. After all, if I change scroll-method from two-finger-scrolling to edge-scrolling, it didn't change at all, also set touchpad-enable to off, and it didn't change too. Those are answers posted on askubuntu. So what are these setting? Is it any meaningful functionality built in Ubuntu? And is it feasible to change touchpad scrolling speed?

I use MacBook Pro trackpad, and I want to set the speed as smoothly and user-friendly as OS X.

Thanks.

[Update to answer the question by mdoran3844]

/dev/input/event0
   bustype : BUS_HOST
   vendor  : 0x0
   product : 0x1
   version : 0
   name    : "Power Button"
   phys        : "LNXPWRBN/button/input0"
   bits ev : EV_SYN EV_KEY

/dev/input/event1
   bustype : BUS_HOST
   vendor  : 0x0
   product : 0x3
   version : 0
   name    : "Sleep Button"
   phys    : "LNXSLPBN/button/input0"
   bits ev : EV_SYN EV_KEY

/dev/input/event2
   bustype : BUS_I8042
   vendor  : 0x1
   product : 0x1
   version : 43907
   name    : "AT Translated Set 2 keyboard"
   phys    : "isa0060/serio0/input0"
   bits ev : EV_SYN EV_KEY EV_MSC EV_LED EV_REP

/dev/input/event3
   bustype : BUS_I8042
   vendor  : 0x2
   product : 0x6
   version : 0
   name    : "ImExPS/2 Generic Explorer Mouse"
   phys    : "isa0060/serio1/input0"
   bits ev : EV_SYN EV_KEY EV_REL

Best Answer

I have a MacBook Pro 11.1 running Kubuntu 14.04. Synaptic is installed, but the X11 and Synaptic config files aren't in quite the same location as listed in mdoran3844's answer.

However, based on this KDE forum post post here, I ran the following command, which worked on my hardware/software environment:

synclient VertScrollDelta=20 HorizScrollDelta=20

If that change works but isn't permanent, you may need to place it in something like your .xinitrc or another start-up script (or hunt down the config files listed by mdoran3844's answer).

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