Comment 0 for bug 1808881

When using the touchpad, the mouse cursor moves even when keeping the finger still on one point.

Triggering the behaviour: this happens when the contact surface is very small, so it gets triggered for example when tapping on a button, right before the finger leaves the touchpad. This makes clicking buttons using the touchpad (for example, the "x" button in the browser tabs) very difficult.

In attachment, an evemu-record done keeping the finger on one point, barely touching the touchpad.

The recording was done with the command:

sudo evemu-record > touchpad.evemu
Available devices:
/dev/input/event0: Power Button
/dev/input/event1: Lid Switch
/dev/input/event2: Power Button
/dev/input/event3: AT Translated Set 2 keyboard
/dev/input/event4: Video Bus
/dev/input/event8: SynPS/2 Synaptics TouchPad
/dev/input/event9: Dell WMI hotkeys
/dev/input/event10: HDA Intel PCH Mic
/dev/input/event11: HDA Intel PCH Front Headphone
/dev/input/event12: HDA Intel PCH HDMI/DP,pcm=3
/dev/input/event13: Laptop_Integrated_Webcam_HD: In
Select the device event number [0-13]: 8

To replay the recording:

sudo evemu-play /dev/input/event8 < touchpad.evemu

(replace event8 with your input device)