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I have Asus K55VM-SX086D laptop. The touchpad is ETPS/2 Elantech Touchpad. Pointer movement was very fine when synaptics driver was in use. After switching to libinput, I no more feel the same accuracy and control as it used to be. I am not able to precisely point objects, I either overshoot or undershoot them. I have already tried adjusting accel speed via xinput, hysteresis patch, this patch: https://bugzilla.redhat.com/show_bug.cgi?id=1316655, but no success. Following are the details:
$ xinput --list-props 13
Device 'ETPS/2 Elantech Touchpad':
Device Enabled (138): 1
Coordinate Transformation Matrix (140): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Tapping Enabled (274): 1
libinput Tapping Enabled Default (275): 0
libinput Tapping Drag Enabled (276): 1
libinput Tapping Drag Enabled Default (277): 1
libinput Tapping Drag Lock Enabled (278): 0
libinput Tapping Drag Lock Enabled Default (279): 0
libinput Accel Speed (280): 0.000000
libinput Accel Speed Default (281): 0.000000
libinput Natural Scrolling Enabled (282): 1
libinput Natural Scrolling Enabled Default (283): 0
libinput Send Events Modes Available (258): 1, 1
libinput Send Events Mode Enabled (259): 0, 0
libinput Send Events Mode Enabled Default (260): 0, 0
libinput Left Handed Enabled (284): 0
libinput Left Handed Enabled Default (285): 0
libinput Scroll Methods Available (286): 1, 1, 0
libinput Scroll Method Enabled (287): 1, 0, 0
libinput Scroll Method Enabled Default (288): 1, 0, 0
libinput Click Methods Available (289): 1, 1
libinput Click Method Enabled (290): 1, 0
libinput Click Method Enabled Default (291): 1, 0
libinput Disable While Typing Enabled (292): 1
libinput Disable While Typing Enabled Default (293): 1
Device Node (261): "/dev/input/event5"
Device Product ID (262): 2, 14
libinput Drag Lock Buttons (294): <no items>
libinput Horizonal Scroll Enabled (263): 1
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