Trackpoint deceleration is not working on Ubuntu 16.04 , 17.04 on Dell latitude 5470

Asked by Alexey on 2017-05-13

I am unable to achieve acceptable results with all the different knobs that are available. If I tune down acceleration, I am able to do detailed pointing, but the stick is generally so slow, that it takes ages to cross the screen. On the other hand, if I increase the acceleration, even the slightest movement of the stick makes it jump significantly on the screen so that I am unable to do detailed selections.

xinput list-props 13
Device 'AlpsPS/2 ALPS DualPoint Stick':
 Device Enabled (140): 1
 Coordinate Transformation Matrix (142): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
 libinput Accel Speed (309): 0.000000
 libinput Accel Speed Default (310): 0.000000
 libinput Accel Profiles Available (311): 1, 1
 libinput Accel Profile Enabled (312): 1, 0
 libinput Accel Profile Enabled Default (313): 1, 0
 libinput Natural Scrolling Enabled (314): 0
 libinput Natural Scrolling Enabled Default (315): 0
 libinput Send Events Modes Available (260): 1, 0
 libinput Send Events Mode Enabled (261): 0, 0
 libinput Send Events Mode Enabled Default (262): 0, 0
 libinput Left Handed Enabled (316): 0
 libinput Left Handed Enabled Default (317): 0
 libinput Scroll Methods Available (318): 0, 0, 1
 libinput Scroll Method Enabled (319): 0, 0, 1
 libinput Scroll Method Enabled Default (320): 0, 0, 1
 libinput Button Scrolling Button (321): 2
 libinput Button Scrolling Button Default (322): 2
 libinput Middle Emulation Enabled (323): 0
 libinput Middle Emulation Enabled Default (324): 0
 Device Node (263): "/dev/input/event6"
 Device Product ID (264): 2, 8
 libinput Drag Lock Buttons (325): <no items>
 libinput Horizontal Scroll Enabled (326): 1

https://bugs.freedesktop.org/show_bug.cgi?id=99860

The trackpoint actually works on Windows, so this is not hardware related bug. This is linux related, because guy with fedora has the exact same behavior as I have. Pleases help

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Last query:
2017-05-13
Last reply:
10 hours ago
Launchpad Janitor (janitor) said : #1

This question was expired because it remained in the 'Open' state without activity for the last 15 days.