Parameters of Evdev Scrolling Distance: meaning

mouseterminalxinput

I do not understand the two last parameters of the mouse scrolling distance I would like to increase:

xinput list-props 14
sudo xinput set-prop 14 'Evdev Scrolling Distance' 1, 1, 1

14 is the device ID in my case ($ xinput list).

The first one represents, how many mouse wheel scroll units get counted as one scroll, which means, that if the value was 2, then I would need to move the mouse wheel by two scrolling units in any direction to move the page. This, of course, is recommended to be set to one.

But what do the other two values mean?
Ultimately, how to I extend the distance of page scroll per mouse wheel movement units?

Best Answer

from: https://www.mankier.com/4/evdev

Option "VertScrollDelta" "integer" The amount of motion considered one unit of scrolling vertically. Default: "1". Property: "Evdev Scrolling Distance".

Option "HorizScrollDelta" "integer" The amount of motion considered one unit of scrolling horizontally. Default: "1". Property: "Evdev Scrolling Distance".

Option "DialDelta" "integer" The amount of motion considered one unit of turning the dial. Default: "1". Property: "Evdev Scrolling Distance".

Related Solutions

Mousewheel/touchpad scrolling in Browsers

Feature is called "Coasting speed". To disable it you can use:

xinput --set-prop --type=float "<your device>" "Synaptics Coasting Speed" 0 0

to list devices you can use:

xinput list

alternative variant (for touchpads) is synclient options (there are 3 of them):

CornerCoasting          = 0
CoastingSpeed           = 0
CoastingFriction        = 0

TrackPoint problems with latest libinput, Xorg updates (need evdev props)

You can still use evdev with new kernels and x server versions.

I'm using a Debian system, but it should work similarly. The link I give is for Arch.

You will need to install xf86-input-evdev from the archlinux 'extra' repository.

Once that's done, you can specify in your xorg.conf that you would like to use evdev for a particular device. On my Thinkpad, I actually prefer libinput for trackpoints but prefer evdev for absolutely everything else; with that said, I will show you your trackpoint configuration when set up to use evdev.

# Your Trackpoint evdev rules
Section "InputClass"libinput
    Identifier      "TrackPoint - force evdev"
    Driver          "evdev"
# Note: The actual trackpoint name can vary from system to system.
    MatchProduct    "Synaptics Inc. Composite TouchPad / TrackPoint (Stick)"
    Option      "AccelerationProfile"   "5" # Power function
    Option      "ConstantDeceleration"  "3.7"
    Option      "AdaptiveDeceleration"  "4"
    Option      "VelocityScale"         "60"
    Option      "EmulateWheel"          "true"
    Option      "EmulateWheelButton"    "2"
    Option      "EmulateWheelInertia"   "10"
    Option      "EmulateWheelTimeout"   "200"
    Option      "EmulateThirdButton"    "false"
# Maybe this too?
#   Option      "YAxisMapping"      "4 5"
# Can't find an option for middle button timeout, so that may have to be set using xinput afterwards like you're probably already doing.
EndSection

# a device I want to use evdev for, but set all the properties of myself using xinput
Section "InputClass"
    Identifier      "MS Trackball Optical"
    MatchProduct    "Microsoft Microsoft Trackball Optical®"
    Driver          "evdev"
EndSection

Best Answer

Related Solutions

Mousewheel/touchpad scrolling in Browsers

TrackPoint problems with latest libinput, Xorg updates (need evdev props)

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