The ALPS DualPoint TouchPad synaptics in linux is way too sensitive. To check
it one only needs to put on finger on it and near another one, he'll notice
that even ~1 cm far the second finger will make the pointer on the screen
vibrating. It seems to be really an issue with the driver rather than settings.
If a high value is given to FingerHigh parameter it will make the activation of
the pointer harder for the finger but as soon as the pointer is under finger
control, the second finger proximity influence is exactly the same. Another
annoying effect of this too high sensitivity is that when scrolling with two
fingers, the fingers need to to be separated with nearly 7 mm minimum,
otherwise it seems to see only one finger.
Though ALPS touchpad seems not well designed, this issue comes from the linux
synaptics driver since this touchpad works much better in windows. In windows,
even when the two finger are tightly in contact scrolling works.
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