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Steinberg2010

Member

Registered: 2016-01-28

Posts: 73

Thinkpad T530 touchpad scrolling jumpy in web browsers (i3 + opera)

I have a Thinkpad T530 and when two-finger scrolling in web browsers such as opera/chromium with the touchpad it cam be v. jumpy and erratic. For example it'll often jump back in the opposite direction as you release your fingers.

Strangely I don't have this problem with either the trackpoint (middle button scroll) or a kensington trackball mouse. Is there some sort of setting that I could have missed?

contents of 20-thinkpad.conf and 50-synaptics.conf below:

Section "InputClass"
    Identifier	"Trackpoint Wheel Emulation"
    MatchProduct	"TPPS/2 IBM TrackPoint"
    MatchDevicePath	"/dev/input/event*"
    Option		"EmulateWheel"		"true"
    Option		"EmulateWheelButton"	"2"
    Option		"Emulate3Buttons"	"false"
    Option		"XAxisMapping"		"6 7"
    Option		"YAxisMapping"		"5 4"
EndSection

# Example xorg.conf.d snippet that assigns the touchpad driver
# to all touchpads. See xorg.conf.d(5) for more information on
# InputClass.
# DO NOT EDIT THIS FILE, your distribution will likely overwrite
# it when updating. Copy (and rename) this file into
# /etc/X11/xorg.conf.d first.
# Additional options may be added in the form of
#   Option "OptionName" "value"
#
Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
	MatchDevicePath "/dev/input/event*"
        Option "TapButton1" "0"
        Option "TapButton2" "0"
        Option "TapButton3" "3"
        Option "HorizTwoFingerScroll" "on"
        Option "VertScrollDelta" "-111"
        Option "HorizScrollDelta" "-111"
# This option is recommend on all Linux systems using evdev, but cannot be
# enabled by default. See the following link for details:
# http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html
        MatchDevicePath "/dev/input/event*"
EndSection

Section "InputClass"
        Identifier "touchpad ignore duplicates"
        MatchIsTouchpad "on"
        MatchOS "Linux"
        MatchDevicePath "/dev/input/mouse*"
        Option "Ignore" "on"
EndSection

# This option enables the bottom right corner to be a right button on clickpads
# and the right and middle top areas to be right / middle buttons on clickpads
# with a top button area.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Default clickpad buttons"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
        Option "SecondarySoftButtonAreas" "58% 0 0 15% 42% 58% 0 15%"
EndSection

# This option disables software buttons on Apple touchpads.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Disable clickpad buttons on Apple touchpads"
        MatchProduct "Apple|bcm5974"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "0 0 0 0 0 0 0 0"
EndSection


#This section configures the trackpoint including natural scrolling
Section "InputClass"
	Identifier	"Trackpoint Wheel Emulation"
	MatchProduct	"TPPS/2 IBM TrackPoint|DualPoint Stick|Synaptics Inc. Composite TouchPad / TrackPoint|ThinkPad USB Keyboard with TrackPoint|USB Trackpoint pointing device|Composite TouchPad / TrackPoint"
	MatchDevicePath	"/dev/input/event*"
	Option		"EmulateWheel"		"true"
	Option		"EmulateWheelButton"	"2"
	Option		"Emulate3Buttons"	"false"
	Option		"XAxisMapping"		"7 6"
	Option		"YAxisMapping"		"5 4"
EndSection

Unfortunately these date from when I was first using Arch and I was particularly inexperienced so they're not as well managed as my later configuration files.

~S

Last edited by Steinberg2010 (2016-11-11 18:55:22)

evilteemo

Member

From: cyberspace

Registered: 2016-11-12

Posts: 10

Website

Re: Thinkpad T530 touchpad scrolling jumpy in web browsers (i3 + opera)

I got a T410 and had similar issues. I fixed them by not using synaptics driver and using libinput instead - note I'm on gnome.

https://wiki.archlinux.org/index.php/Touchpad_Synaptics

Disabling the trackpoint in BIOS is an alternative option which you can try out first, before switching to libinput.

Hope it helps!