Right mouse button does not work on Plasma desktop >= 5.4.2

[Bas van Schaik]

After upgrading to Plasma 5.4.2, the right mouse button doesn't work anymore on the desktop (e.g., to add a panel) or on panels (e.g. to remove a panel). I'm running a mix of 15.04 and 15.10.

Expected behaviour: a pop-up menu with various options

Actual behaviour: nothing happens.

Versions of my Plasma packages:

ii kdeplasma-addons-data 4:5.4.2-0ubuntu1 all locale files for kdeplasma-addons
ii libkdeclarative5 4:4.14.11-0ubuntu2 amd64 declarative library for plasma
ii libkf5plasma5:amd64 5.13.0-0ubuntu1 amd64 Plasma Runtime components
ii libkf5plasmaquick5:amd64 5.13.0-0ubuntu1 amd64 Plasma Runtime components
ii libplasma-geolocation-interface5 4:5.4.2-0ubuntu1 amd64 Plasma Workspace for KF5 library
ii libplasma3 4:4.14.11-0ubuntu2 amd64 Plasma Library for the KDE Platform
ii libplasmaclock4abi3 4:4.10.5-0ubuntu0.1 amd64 library for Plasma clocks
ii plasma-active-data 1:0.5-0ubuntu2 all shared data files for the KDE Plasma Active workspace
ii plasma-active-metadatamodels 1:0.5-0ubuntu2 amd64 Meta Data Plugin for Plasma
ii plasma-active-mobilecomponents 1:0.5-0ubuntu2 amd64 Qt Quick components for the Plasma Active workspace
ii plasma-active-settings 1:0.5-0ubuntu2 amd64 settings for the KDE Plasma Active workspace
ii plasma-active-webbrowser 1:0.5-0ubuntu2 amd64 web browser for the KDE Plasma Active workspace
ii plasma-dataengines-addons 4:5.4.2-0ubuntu1 amd64 additional data engines for Plasma
ii plasma-desktop 4:5.4.2-0ubuntu2 amd64 Tools and widgets for the desktop
ii plasma-desktop-data 4:5.4.2-0ubuntu2 all Tools and widgets for the desktop data files
ii plasma-desktop-dbg 4:5.4.2-0ubuntu2 amd64 Tools and widgets for the desktop debug files
ii plasma-framework 5.13.0-0ubuntu1 amd64 Plasma Runtime components
ii plasma-nm 4:5.3.95-0ubuntu1 amd64 Plasma5 networkmanager library.
ii plasma-pa 4:5.4.2-0ubuntu1 amd64 Plasma 5 Volume controller
ii plasma-runners-addons 4:5.4.2-0ubuntu1 amd64 additional runners for Plasma 5 and Krunner
ii plasma-scriptengine-javascript 4:15.08.0-0ubuntu2 amd64 JavaScript script engine for Plasma
ii plasma-scriptengine-superkaramba 4:15.08.0-0ubuntu1 amd64 SuperKaramba theme support for the Plasma Workspaces
ii plasma-widget-folderview 4:15.08.0-0ubuntu6 amd64 plasma widget showing the content of a folder
ii plasma-widget-menubar 0.1.18-0ubuntu2 amd64 A Plasma applet to display application menubars
ii plasma-widget-message-indicator 0.5.8-3 amd64 Plasma widget to display message indicators
ii plasma-widgets-active 1:0.5-0ubuntu2 amd64 plasma widgets and containments for the KDE Plasma Active
ii plasma-widgets-addons 4:5.4.2-0ubuntu1 amd64 additional widgets for Plasma 5
ii plasma-workspace 4:5.4.2-0ubuntu1 amd64 Plasma Workspace for KF5
ii plasma-workspace-dbg 4:5.4.2-0ubuntu1 amd64 Plasma Workspace for KF5
ii plasma-workspace-wallpapers 4:5.4.2-0ubuntu1 amd64 Wallpapers for Plasma 5

[Carlo Wood (carlo-alinoe)]

I just installed kubuntu 14.10 (the newer one doesn't work at ALL for me, not even as 'try out' from CD)
and ran into the same thing at some point. That is: the mouse can be moved and interact with open
terminals and the keyboard works. Also auto hiding panels appear when the mouse touches their edge.
But the panels do not react at all anymore on left or right clicks, nor does the desktop react to a right click.

After a few minutes and a lot of clicks I got a pop-up saying something like "kdeinit: could not launch /usr/bin/google-chrome-stable". I'm totally fine with that, that file doesn't exist, but really - why does it need 5 minutes of desktop freezing to realize that file doesn't exist?!

[Flames_in_Paradise (ellisistfroh-deactivatedaccount)]

please note that Kubuntu 14.10 Utopic Unicorn, has reached End-of-lifecycle EOL

https://wiki.ubuntu.com/Releases

This version is not supported any longer here.

/OT
We regret this is not the right place for seeking support, since you are suffering issues installing newer versions of Kubuntu - this may obviously be solved seeking help at the right places. This may include personal investigation on the hardware in question.

On the right top side of this page you find the option "Convert to a question" The personal choice on Release-selection would always LTS. The versions inbetween LTS-Releases cannot always guarantee the measure of stabilty in need for a stable production environment. OT/

Some place were to share knowledge find mentioning on Kubuntus Web-presence:

https://www.kubuntu.org/community/