Comment 59 for bug 1506817

Running bionic with 4.15.0-34-generic on T460s, a pretty good repro for me is

1. Place two fingers on the touchpad
2. Try to press a button while keeping two fingers on the touchpad

For me, evtest reports of button events get very erratic when two fingers are kept on the touchpad. When I do not touch the touchpad, evtest reports seem solid.

I have disabled the touchpad as it interferes with my typing, but the state of this setting does not seem to have an effect. The "two fingers on touchpad" probably gets emulated by e.g. my wrist touching the touchpad.

For me the bug interferes mostly with browser use as I use middle button scroll and very often e.g. middle down gets lost and the attempt to scroll does not scroll, or a middle up gets lost and then pointer is stuck in scroll mode.

To me it looks like https://bugs.launchpad.net/ubuntu/+source/rapidsvn/+bug/402892 is about the same issue.