Comment 21 for bug 1042069

Ubuntu 13.10 with a simlpified version of #14 partially "fixes" Lenovo ThinkPad Edge E531.

Section "InputClass"
        Identifier "touchpad"
        MatchProduct "SynPS/2 Synaptics TouchPad"
        Driver "synaptics"

        # increment noise cancellation factor
        Option "HorizHysteresis" "50"
        Option "VertHysteresis" "50"
EndSection

The mouse behaves a bit strange, not good, but better than before. A hysteresis value above 50 makes it even worse (in another aspect) than it was before... Seems like this particular xorg-drug comes with a side-effect ;)

The E531 has a clickpad (i.e. it has its physical button under the finger-sensitivt part of the touchpad). The only way to right-click is to use this pad -.- The lack of precision affects the right click context menus, without the fix above right-clicking always opened some alternative in the right-click menu, often the first. Now, it doesn't click anything most of the time, but sometimes it does hit the first one. Left-clicking is also affected, but there is the alternative of tapping for these clicks.

Some walkarounds that really don't fix the problem:
* Only use tapping. Only works for left-click.
* Set AreaBottomEdge - cannot set for only right-click, has to take the whole bottom edge. Might work for you.
* Change the theme, some have had success with adding a non-clickable border around all context menus, effectively moving the menu way off the mouse so you don't accidentally click it.

I think what we really need is a ClickHysteresis, so that the mouse doesn't move when clicking the clickpad (both left and right click).

Maybe we should open a new bug for this issue? I think we could have two very similar bugs in one thread here.