[SRU] Mouse fails to scroll apps in Xfce Settings Manager

[Kev Bowring]

[Impact]

 * Preference dialogs embedded in xfce4-settings-manager 4.13.x are not scrollable.

 * This is a major decrease in usability, particularly with the preference dialogs
   which often require scrolling.

 * This package fixes the issue by enabling GDK_CORE_DEVICE_EVENTS, working around xinput2's subpixel handling triggering unwanted enter/leave-notify events.
   - Upstream xinput2 bug: https://bugs.freedesktop.org/show_bug.cgi?id=92681
   - Upstream xfce4-settings commit: https://git.xfce.org/xfce/xfce4-settings/commit/?id=b664ea04a235051fb27748bd01a6b7823d671e8b

[Test Case]

 * Open Notifications from the menu: Settings > Notifications, or via the terminal: xfce4-notifyd-config

 * Applications Tab is scrollable with mouse wheel.

 * Open Notifications from the Xfce Settings Manager: Personal > Notifications

 * Applications Tab fails to scroll with mouse wheel.

[Regression Potential]

 * Minimal: The patch only applies an env variable only to the Xfce Settings Manager.

[Original Report]
Open notifications from settings menu or via terminal.

Applications Tab is scrollable with mouse wheel.

Open notifications from Settings Dialogue.

Applications Tab fails to scroll with mouse wheel.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: xfce4-notifyd 0.3.4-1
ProcVersionSignature: Ubuntu 4.9.0-11.12-generic 4.9.0
Uname: Linux 4.9.0-11-generic x86_64
ApportVersion: 2.20.4-0ubuntu1
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Jan 1 18:53:18 2017
InstallationDate: Installed on 2016-06-11 (204 days ago)
InstallationMedia: Xubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160611)
SourcePackage: xfce4-notifyd
UpgradeStatus: No upgrade log present (probably fresh install)

[dino99 (9d9)]

That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml

[Sean Davis (bluesabre)]

Also affects bionic.

[Sean Davis (bluesabre)]

Per the upstream bug, this affects xfce4-settings.

[Kev Bowring (flocculant)]

Scrolling with mouse fails in some plugins.

Apparently "This is a regression in xfce4-settings and unrelated to xfce4-notifyd - it affects all other plugged Gtk3 dialogs as well as far as I can tell." https://bugzilla.xfce.org/show_bug.cgi?id=13275#c5

[Kev Bowring (flocculant)]

New upstream bug reported for xfce4-settings

[Andreldm-2 (andreldm-2)]

Yes, it affects any scrolled window of plugged gtk3 dialogs.
The workaround I found is to click (left or right) and hold on any part of the scrolled window then mouse wheel works.
After the mouse button is released, it'll briefly work. I suspect it's not an issue about events passage, but related to focus.

[Vladi105-u (vladi105-u)]

Scrolling works if you click on the mouse wheel and keep scrolling it

[Alexxcons-x (alexxcons-x)]

*** Bug 14732 has been marked as a duplicate of this bug. ***

[Theo Linkspfeifer (lastonestanding)]

Another workaround:

$ GDK_CORE_DEVICE_EVENTS=1 xfce4-settings-manager

[Bluesabre-1 (bluesabre-1)]

Fix applied with the below commit.

https://git.xfce.org/xfce/xfce4-settings/commit/?id=b664ea04a235051fb27748bd01a6b7823d671e8b

[Simon Steinbeiß (ochosi)]

*** Bug 13317 has been marked as a duplicate of this bug. ***

[Bluesabre-1 (bluesabre-1)]

*** Bug 14879 has been marked as a duplicate of this bug. ***

[Launchpad Janitor (janitor)]

This bug was fixed in the package xfce4-settings - 4.13.4-1ubuntu2

---------------
xfce4-settings (4.13.4-1ubuntu2) disco; urgency=medium

  * debian/patches/xubuntu_lp1653448.patch:
    - Fix scrolling in the settings manager (LP: #1653448)

 -- Sean Davis <email address hidden> Sun, 03 Mar 2019 07:55:14 -0500

[Sean Davis (bluesabre)]

Attaching cosmic debdiff.

[Sean Davis (bluesabre)]

Uploaded package version 4.13.4-1ubuntu1.18.10.1

[Timo Aaltonen (tjaalton)]

Hello Kev, or anyone else affected,

Accepted xfce4-settings into cosmic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/xfce4-settings/4.13.4-1ubuntu1.18.10.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-cosmic to verification-done-cosmic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-cosmic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.