[Bug 954012] [NEW] Task Manager Widget on secondary monitor not minimising application when primary minor running a full window application

mcnaz 954012 at bugs.launchpad.net
Tue Mar 13 13:11:06 UTC 2012

Public bug reported:

This is related to kwin - kde-window-manager - or so I hope.

Description of Issue:

Running Kubuntu 12.04 with a dual monitor setup - /etc/X11/xorg.conf
shown later. Primary monitor 1680 x 1050 on the right and secondary
monitor 1280 x 1080 on the left

Installed VirtualBox 4.1.8 - 4.1.8-dfsg-2 - installed from Muon.

When VirtualBox is running on the primary monitor and is maximised (via
HOST+F), the following issues arise:

1. Any applications shown on the secondary monitor's Panel via Task
Manager widget cannot be minimised by clicking on the applications tab.
Existing minimised applications on this monitor can be restored by
clicking on their respective tab but subsequent clicks on the tab does
not re-minimise the application. Applications on the secondary monitor
can only by minimised by clicking on Task Manager tabs when VirtualBox
is not in Full Screen mode (VB Host + F)

2. Kickoff Application Launcher menu (present on the primary monitor
only) is rendered under the VirtualBox VM when the VM is in Full Screen.
A keyboard shortcut is assigned to display the Kickoff menu. The menu
renders fine when VirtualBox VM is not maximised. When the VM is in
fullscreen, Kickoff keyboard shortcut does not display the menu - it is
only briefly visible when the Kickoff shortcut menu renders its
slidedown closing animation. Kickoff shortcut is executed outside of the
VB VM by clicking on an empty space on the secondary monitor

3. Applications cannot be dragged from the secondary monitor to the
primary monitor whilst a VirtualBox VM is in fullscreen mode on the
primary monitor. Applications are rendered under the fullscreen VM.

Expected Behaviour:

1. Application can be minimised/maximised on the secondary monitor
irrespective of a full screen application running on the primary monitor

2. Kickoff menu to render above all content on the primary monitor when
kickoff keyboard shortcut is invoked.

3. Dragged application windows from the secondary monitor should render
on top of the active application window on the primary monitor.

:$ lsb_release -rd
Description:    Ubuntu precise (development branch)
Release:        12.04

~$ apt-cache policy kde-window-manager
  Installed: 4:4.8.1-0ubuntu2
  Candidate: 4:4.8.1-0ubuntu2
  Version table:
 *** 4:4.8.1-0ubuntu2 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
        100 /var/lib/dpkg/status

$ apt-cache policy virtualbox-qt
  Installed: 4.1.8-dfsg-2
  Candidate: 4.1.8-dfsg-2
  Version table:
 *** 4.1.8-dfsg-2 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/universe i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: kde-window-manager 4:4.8.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic-pae 3.2.9
Uname: Linux 3.2.0-18-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
Date: Tue Mar 13 12:39:10 2012
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120228.1)
SourcePackage: kde-workspace
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: kde-workspace (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: apport-bug i386 precise

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  Task Manager Widget on secondary monitor not minimising application
  when primary minor running a full window application

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