I have a new laptop with an "ETPS/2 Elantech Touchpad".
A single finger is only detected, if it is held in such a way that a big area touches the pad. If one touches the pad only with the fingertip, it wil not be detected, both for clicking and for moving the pointer.
Strangley, two-finger gestures are detected even if the pad is only touched with the fingertips.
sudo modprobe -r psmouse sudo modprobe psmouse proto=imps
If I do this, one finger finally gets detected as it should, but all two or more finger gestures stop working. Also
grep -B 5 mouse /proc/bus/input/devices
tells that the touchpad now is identified as a mouse, while before the changes it was identified correctly as
ETPS/2 Elantech Touchpad.