2

The system

  • Fedora 26 Workstation 64-bit
  • GNOME 3.24.2
  • Lenovo ThinkPad T400

The issue

Two finger scrolling is not working on the touchpad.

I tried enabling two finger scrolling through Settings GUI for Mouse & Touchpad with no result. I also tried setting the value of

org.gnome.desktop.peripherals.touchpad two-finger-scrolling-enabled

to true manually using dconf editor but that didn't work either.

Running libinput list-devices shows that the touchpad on the laptop is SynPS/2 Synaptics TouchPad.

Device:           SynPS/2 Synaptics TouchPad
Kernel:           /dev/input/event5
Group:            8
Seat:             seat0, default
Size:             62x29mm
Capabilities:     pointer 
Tap-to-click:     disabled
Tap-and-drag:     enabled
Tap drag lock:    disabled
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: n/a
Calibration:      n/a
Scroll methods:   *edge 
Click methods:    none
Disable-w-typing: enabled
Accel profiles:   none
Rotation:         n/a

The line Scroll methods: *edge might be related to the issue. I have set org.gnome.desktop.peripherals.touchpad edge-scrolling-enabled to false and it is indeed disabled.

As a side note, edge scrolling works fine, when enabled.

Any ideas how to make two finger scrolling work?

  • I've the same issue using a Lenovo T440P. 2-finger scrolling worked fine up to the suggested software update I got, so I guess something in the update broke the 2-finger scrolling. Very annoying! Changing the settings didn't help me either. – Jop van Raaij Sep 17 '17 at 16:12
  • Me again.. After todays update, it works again :). I had to enable the two-finger scrolling again in the settings screen to make it work. – Jop van Raaij Sep 18 '17 at 19:35
1

This seems to be related: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722478

I can confirm that the modprobe workaround works for me:

modprobe -r psmouse
modprobe psmouse

With Ubuntu 18.04 Kernel 4.15 and a T450s

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.