If -synaptics is installed, GNOME Mouse & Touchpad Settings doesn't work

Bug #1686081 reported by Jeremy Bicha on 2017-04-25
This bug affects 16 people
Affects Status Importance Assigned to Milestone
Release Notes for Ubuntu
xorg (Ubuntu)
Jean-Baptiste Lallement
Jean-Baptiste Lallement
xubuntu-meta (Ubuntu)

Bug Description

I'm splitting this issue off from LP: #1685542 (which made xserver-xorg-input-all no longer recommend xserver-xorg-input-synaptics) for tracking the remaining issues.

gnome-control-center only supports libinput. If xserver-xorg-input-synaptics is installed (because it's used by some desktops which haven't been ported to libinput yet), synaptics overrides libinput. That makes gnome-control-center's Mouse & Touchpad settings panel only show basic settings and important configurations don't work.

1. Which desktops/apps still need -synaptics?
- Unity
- Xfce?
All the other major desktops have already been ported (LP: #1417980)

2. Can these apps be ported or removed before 18.04 LTS is released?

3. Can the desktops be ported and how bad is it if they are not ported and -synaptics is no longer available?

4. If -synaptics can't be removed completely from 18.04 LTS, does it make sense to have gnome-control-center Conflicts: xserver-xorg-input-synaptics?

5. Is there any other way we can fix this conflict?

Jeremy Bicha (jbicha) on 2017-04-25
description: updated
Timo Aaltonen (tjaalton) wrote :

the only one that needs -synaptics is unity

Paul White (paulw2u) wrote :

When testing both Xubuntu 17.10 daily ISOs (20170428) I found that tap and double tap on the touchpad to not be working. Scrolling was fine.

Installing -synaptics re-enabled the tap/double tap functionality after logging out and back in again.

Timo Aaltonen (tjaalton) wrote :

tap-to-click isn't enabled by default in -libinput

Ubuntu QA Website (ubuntuqa) wrote :

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:

tags: added: iso-testing
tags: added: desktop-trello-import
tags: removed: desktop-trello-import
Jeremy Bicha (jbicha) wrote :

Here's a request asking for gnome-control-center to warn somehow when the Synaptics driver is in use:


Launchpad Janitor (janitor) wrote :

This bug was fixed in the package xubuntu-meta - 2.216

xubuntu-meta (2.216) artful; urgency=medium

  * Refreshed dependencies
  * Added xserver-xorg-input-synaptics to core-recommends, desktop-
    recommends (LP: #1686081)
  * Update Standards-Version to 4.0.0
    - debian/control

 -- Sean Davis <email address hidden> Mon, 18 Sep 2017 20:44:45 -0400

Changed in xubuntu-meta (Ubuntu):
status: New → Fix Released
Didier Roche (didrocks) on 2017-09-20
tags: added: rls-aa-incoming
Will Cooke (willcooke) on 2017-09-27
tags: removed: rls-aa-incoming
Changed in xorg (Ubuntu Artful):
assignee: nobody → Jean-Baptiste Lallement (jibel)
Changed in ubuntu-release-notes:
status: New → Fix Released
Consumology (hgms72-4oneway) wrote :

After upgrading my laptop to 17.10 I had right click functionality on my touchpad. Then it was gone, some other people also reported this on askubuntu but I could not find a related bug. After finding this bug I installed xserver-xorg-input-synaptics and right click on my touchpad is back. So the disappearing right click functionality is a problem in libinput?

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