[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.

[Brian Murray (brian-murray)]

The fix for this bug has been awaiting testing feedback in the -proposed repository for cosmic for more than 90 days. Please test this fix and update the bug appropriately with the results. In the event that the fix for this bug is still not verified 15 days from now, the package will be removed from the -proposed repository.

[Steve Langasek (vorlon)]

The version of xfce4-settings in the proposed pocket of Cosmic that was purported to fix this bug report has been removed because the bugs that were to be fixed by the upload were not verified in a timely (105 days) fashion.