[Bug 1674401] [NEW] Broken window switcher (?) - mysterious message

[Mekk]

From time to time, after I Alt-Tab to switch the current window, I get

mysterious notification about broken window switcher. In Polish it reads

Instalacja przełącznika okien jest uszkodzona, brakuje zasobów.
Powiadom o tym swoją dystrybucję.

(screenshot attached). Roughly translating back to English it means

Installation of window switcher is broken, lack of resources.
Let your distribution know.

(unfortunately I failed to find source of this message so don't know
actual English text).

Once it happens, it usually reappears on every or almost every Alt-Tab
(and those messages stack).

Apart from this message things seem to work more-or-less fine (windows
are switched).

I report the bug for two reasons:

1. I have absolutely no clue what does the error mean, which resources
may be missing (my computer does not seem to be lacking anything, there
is a lot of spare memory, disk, low I/O etc), which program reports it,
and what I am, or am not, expected to do. So, as the minimum, it would
be great if somebody could patch this message so it actually gives a
clue what happened.

2. Error message explicite asks me to let my distribution know (I
suppose „distribution” in this context means Linux distribution, Ubuntu
in my case)(.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I use 2-monitor setup (and IIRC I never saw this problem on single
monitor) and nvidia binary drivers.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: kwin-x11 4:5.5.5-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-64.85-lowlatency 4.4.44
Uname: Linux 4.4.0-64-lowlatency x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Mar 20 16:36:22 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-02-18 (1491 days ago)
InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3)
SourcePackage: kwin
UpgradeStatus: Upgraded to xenial on 2016-08-04 (227 days ago)

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


** Tags: amd64 apport-bug xenial

** Attachment added: "instalacja_przelacznika_okien.png"
Loading Image...
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Title:
Broken window switcher (?) - mysterious message

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[Mekk]

I did some more googling and finally guessed the right phrase.
Some reports of similar (the same?) problem (all unresolved):

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804638
https://bugzilla.redhat.com/show_bug.cgi?id=1244468
https://forum.kde.org/viewtopic.php?f=111&t=125764
http://forums.netrunner.com/showthread.php?tid=23590

So looks like the English text is:

The Window Switcher installation is broken, resources are missing.
Contact your distribution about this.

and I am not the only one who is clueless about the reason.


** Bug watch added: Debian Bug tracker #804638
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804638

** Bug watch added: Red Hat Bugzilla #1244468
https://bugzilla.redhat.com/show_bug.cgi?id=1244468
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Title:
Broken window switcher (?) - mysterious message

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[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: kwin (Ubuntu)
Status: New => Confirmed
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Title:
Broken window switcher (?) - mysterious message

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[Bastian Voigt]

Any plans on fixing this? Anything I can provide you for analysis?
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https://bugs.launchpad.net/bugs/1674401

Title:
Error Message: The Window Switcher installation is broken, resources
are missing. Contact your distribution about this.

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https://bugs.launchpad.net/ubuntu/+source/kwin/+bug/1674401/+subscriptions

[Bastian Voigt]

I use KDE Plasma on Ubuntu Bionic and the problem still exists

** Summary changed:

- Broken window switcher (?) - mysterious message
+ Error Message: The Window Switcher installation is broken, resources are missing. Contact your distribution about this.
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Title:
Error Message: The Window Switcher installation is broken, resources
are missing. Contact your distribution about this.

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[Bastian Voigt]

For me, the problem does not occur when using the default task-switcher.
It occurs only when I try to install additional task switcher styles in
the system settings dialog
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Title:
Error Message: The Window Switcher installation is broken, resources
are missing. Contact your distribution about this.

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