Touchpads are unresponsive and laggy for small finger movements
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
libinput |
Fix Released
|
Medium
|
|||
libinput (Ubuntu) |
Fix Released
|
High
|
Daniel van Vugt | ||
Bionic |
Fix Released
|
High
|
Daniel van Vugt |
Bug Description
Touchpads are unresponsive and laggy for small finger movements. This is a regression caused by the introduction of libinput, visible on at least Lenovo X1 Carbon gen 4 and 5, Dell XPS 13, and Apple Macbook Air.
WORKAROUND (1)
1. Log into "Ubuntu on Xorg" only. This workaround only works for Xorg.
2. sudo apt install xserver-
3. Tweak your personal preferences using 'synclient' (the GUI settings won't work any more). For example:
synclient HorizHysteresis=0 VertHysteresis=0
WORKAROUND (2)
1. Downgrade to version 1.9.4-1 of libinput: https:/
That version contained the fix for this bug, briefly.
RELEVANT UPSTREAM BUGS ABOUT THE SAME ISSUE:
https:/
https:/
https:/
https:/
https:/
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: libinput10 1.6.3-1ubuntu1
ProcVersionSign
Uname: Linux 4.10.0-22-generic x86_64
ApportVersion: 2.20.5-0ubuntu4
Architecture: amd64
Date: Fri Jun 9 14:52:18 2017
InstallationDate: Installed on 2017-06-08 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170607)
SourcePackage: libinput
UpgradeStatus: No upgrade log present (probably fresh install)
Changed in libinput: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
summary: |
- X1 Carbon gen4 and gen5 touchpads are unresponsive and laggy + Touchpads are unresponsive and laggy |
Changed in libinput (Ubuntu): | |
status: | Incomplete → Confirmed |
no longer affects: | gnome-shell (Ubuntu) |
Changed in libinput: | |
status: | Confirmed → Fix Released |
Changed in libinput (Ubuntu): | |
status: | Confirmed → Fix Committed |
Changed in libinput (Ubuntu): | |
assignee: | nobody → Daniel van Vugt (vanvugt) |
status: | Triaged → In Progress |
description: | updated |
description: | updated |
summary: |
- Touchpads are unresponsive and laggy + Touchpads are unresponsive and laggy for small finger movements |
description: | updated |
description: | updated |
description: | updated |
Changed in libinput (Ubuntu Bionic): | |
status: | Triaged → In Progress |
Changed in libinput (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
Changed in libinput: | |
status: | Fix Released → Confirmed |
Changed in libinput: | |
status: | Confirmed → Fix Released |
An interesting test is to move your finger around in small circles on the touchpad. If the hysteresis is too high then you will see the cursor move in a more square-like shape.