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

Bug #1686081 reported by Jeremy Bicha on 2017-04-25
62
This bug affects 15 people
Affects Status Importance Assigned to Milestone
Release Notes for Ubuntu
Undecided
Unassigned
xorg (Ubuntu)
High
Jean-Baptiste Lallement
Artful
High
Jean-Baptiste Lallement
xubuntu-meta (Ubuntu)
Undecided
Unassigned
Artful
Undecided
Unassigned

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.

Questions
---------
1. Which desktops/apps still need -synaptics?
- Unity
- Xfce?
- LXDE? LXQt?
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:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1686081

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:

https://bugzilla.gnome.org/show_bug.cgi?id=784266

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?

Daniel Frost (k-one) wrote :

Hi, I just upgraded from 17.04 to 17.10.
I m running my ubuntu in Xorg mode.
After the upgrade (Dell Laptop with an Alps touchpad) there are no touchpad settings available at all (see attached screenshot).
The touchpad would work though, but I could not disable it at all. Pressing the Function-key+F3 would show the on-screen symbol of the disabled touchpad, but it wouldn't disable the touchpad.
At the moment I am using a bash script that is utilizing "xinput --disable $device" to enable/disable the touchpad.

Chris Rainey (ckrainey) wrote :

@k-one, do the following:

$ sudo apt-get update && sudo apt-get --auto-remove purge xserver-xorg-input-synaptics && sudo apt-get install xserver-xorg-input-libinput

$ reboot

Fixed?

Daniel Frost (k-one) wrote :

Hi Chris,

thanks for taking time to look into this.
I tried your code, but no, the system touchpad hotkey (FN+F3) is still not working.
There are still no touchpad settings available.
And my workaround-script doesn't work anymore either. ;-)

Chris Rainey (ckrainey) wrote :

Hrmmmm ... curious.

You can revert my code by reversing the action and reinstalling the -synaptics driver.

Might be time for a clean-install?

Daniel Frost (k-one) wrote :

Hm, some things you should not do in the middle of the night. :-(

I have tried your code again today. It does work!
Touchpad works fine, settings are available.

Yesterday, doing a simple copy&paste, I did miss the linebrake after the end of the first line here in the launchpad code (same in the email).

So I have to apologize for making you go "Hrmmmm ... curious." :-)
And thanks a lot for the working touchpad.

Awesome. Welcome to GNOME proper!

On Tue, Jan 30, 2018 at 3:35 PM Daniel Frost <email address hidden> wrote:

> Hm, some things you should not do in the middle of the night. :-(
>
> I have tried your code again today. It does work!
> Touchpad works fine, settings are available.
>
> Yesterday, doing a simple copy&paste, I did miss the linebrake after the
> end of the first line here in the launchpad code (same in the email).
>
> So I have to apologize for making you go "Hrmmmm ... curious." :-)
> And thanks a lot for the working touchpad.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1686081
>
> Title:
> If -synaptics is installed, GNOME Mouse & Touchpad Settings doesn't
> work
>
> Status in Release Notes for Ubuntu:
> Fix Released
> Status in xorg package in Ubuntu:
> Confirmed
> Status in xubuntu-meta package in Ubuntu:
> Fix Released
> Status in xorg source package in Artful:
> Confirmed
> Status in xubuntu-meta source package in Artful:
> Fix Released
>
> 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.
>
> Questions
> ---------
> 1. Which desktops/apps still need -synaptics?
> - Unity
> - Xfce?
> - LXDE? LXQt?
> 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?
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu-release-notes/+bug/1686081/+subscriptions
>

Chris Rainey (ckrainey) wrote :

@me ... remember to use the <code> tags !!

On Tue, Jan 30, 2018 at 4:10 PM Chris Rainey <email address hidden> wrote:

> Awesome. Welcome to GNOME proper!
>
>
> On Tue, Jan 30, 2018 at 3:35 PM Daniel Frost <email address hidden> wrote:
>
>> Hm, some things you should not do in the middle of the night. :-(
>>
>> I have tried your code again today. It does work!
>> Touchpad works fine, settings are available.
>>
>> Yesterday, doing a simple copy&paste, I did miss the linebrake after the
>> end of the first line here in the launchpad code (same in the email).
>>
>> So I have to apologize for making you go "Hrmmmm ... curious." :-)
>> And thanks a lot for the working touchpad.
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1686081
>>
>> Title:
>> If -synaptics is installed, GNOME Mouse & Touchpad Settings doesn't
>> work
>>
>> Status in Release Notes for Ubuntu:
>> Fix Released
>> Status in xorg package in Ubuntu:
>> Confirmed
>> Status in xubuntu-meta package in Ubuntu:
>> Fix Released
>> Status in xorg source package in Artful:
>> Confirmed
>> Status in xubuntu-meta source package in Artful:
>> Fix Released
>>
>> 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.
>>
>> Questions
>> ---------
>> 1. Which desktops/apps still need -synaptics?
>> - Unity
>> - Xfce?
>> - LXDE? LXQt?
>> 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?
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu-release-notes/+bug/1686081/+subscriptions
>>
>

William Maddox (wmaddox) wrote :

I experienced this problem when doing a *clean installation* of Ubuntu GNOME 16.04.3. I confirmed that the synaptics driver was in use. apt-get update; apt-get upgrade did not resolve the problem.

I was able to get the touchpad settings working by uninstalling the synaptics driver and installing libinput. I had to upgrade a held-back dependency in order to do this, and I'm not sure if the result was entirely kosher.

It seems like a clean installation should not have this problem, nor is it clear to me how the synaptics support got dropped in Ubuntu GNOME 16.04.3 when the upstream version affected was 3.20, and 16.04.3 is still documented as including GNOME 3.18. I can understand how these kinds of issues can occur in an upgrade to a new major version such as 17.10, but it's really a big boo-boo to have this sort of breakage in the routine updates to an LTS release. It would at least be helpful to mention this issue in the release notes for UG 16.04.3.

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