I am using a ThinkPad E595 with Ubuntu 20.04 and tried to alter the touchpad acceleration.
Since xinput --list-props 13 didn't give me any options other than libinput Accel Speed I installed sudo apt-get install xserver-xorg-input-synaptics. There I had the options Device Accel Constant Deceleration and Device Accel Adaptive Deceleration which did the trick and I got a nice touchpad feeling.
But this completely broke the palm detection. Uninstalling synaptics brought back the perfect palm detection from libinput.
Has anyone an idea how to get both, the nice touchpad experience and the palm detection?
Thanks in advance!
Edit:
The options I have with libinput (xinput --list-props 13) to alter the touchpad behavior are:
Device 'SynPS/2 Synaptics TouchPad':
Device Enabled (155): 1
Coordinate Transformation Matrix (157): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Tapping Enabled (311): 1
libinput Tapping Enabled Default (312): 0
libinput Tapping Drag Enabled (313): 1
libinput Tapping Drag Enabled Default (314): 1
libinput Tapping Drag Lock Enabled (315): 0
libinput Tapping Drag Lock Enabled Default (316): 0
libinput Tapping Button Mapping Enabled (317): 1, 0
libinput Tapping Button Mapping Default (318): 1, 0
libinput Natural Scrolling Enabled (293): 0
libinput Natural Scrolling Enabled Default (294): 0
libinput Disable While Typing Enabled (319): 1
libinput Disable While Typing Enabled Default (320): 1
libinput Scroll Methods Available (295): 1, 1, 0
libinput Scroll Method Enabled (296): 1, 0, 0
libinput Scroll Method Enabled Default (297): 1, 0, 0
libinput Click Methods Available (321): 1, 1
libinput Click Method Enabled (322): 1, 0
libinput Click Method Enabled Default (323): 1, 0
libinput Middle Emulation Enabled (300): 0
libinput Middle Emulation Enabled Default (301): 0
libinput Accel Speed (302): 0.400000
libinput Accel Speed Default (303): 0.000000
libinput Left Handed Enabled (307): 0
libinput Left Handed Enabled Default (308): 0
libinput Send Events Modes Available (278): 1, 1
libinput Send Events Mode Enabled (279): 0, 0
libinput Send Events Mode Enabled Default (280): 0, 0
Device Node (281): "/dev/input/event6"
Device Product ID (282): 2, 7
libinput Drag Lock Buttons (309): <no items>
libinput Horizontal Scroll Enabled (310): 1`
