[Bug 1689020] [NEW] Touchpad edge scroll stops working randomly

[Tomasz Früboes]

Public bug reported:

As in summary - touchpad edge scroll stops working randomly. This seems
to be software related, since switching to another window with alt-tab
fixes the problem (at least for some time). Going back to the original
window (this time switch method does not matter, i.e. can be via
clicking on taskbar) keeps the edge scroll working

This is kubuntu 17.04, kwin version is 4:5.9.4-0ubuntu1.

I'm using dell vostro 2520 laptop. Relevant part of the xinpunt output
is the following:

⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ AlpsPS/2 ALPS GlidePoint                  id=12   [slave  pointer  (2)]

Could you take a look on this?

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: kwin-x11 4:5.9.4-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux 4.10.0-20-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: KDE
Date: Sun May  7 10:55:16 2017
ExecutablePath: /usr/bin/kwin_x11
InstallationDate: Installed on 2017-05-06 (0 days ago)
InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
 LANGUAGE=
SourcePackage: kwin
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: kwin (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug zesty

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https://bugs.launchpad.net/bugs/1689020

Title:
  Touchpad edge scroll stops working randomly

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