https://bugs.kde.org/show_bug.cgi?id=378350
Bug ID: 378350
Summary: Task manager incorrectly recognize screen after
display plugged/unplugged
Product: plasmashell
Version: 5.9.3
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: Task Manager
Assignee: h...@kde.org
Reporter: dmitry.s.lisov...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
Application: plasmashell 5.9.3
Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.8.0-41-generic x86_64
Tried Ubuntu 16.10 and KDE Neon Developer Edition (Stable branches)
Steps to reproduce (I will describe my typical use case):
1. Given system with two displays (e.g. one laptop and one external, or two
external displays).
2. (Not sure if it's necessary) Set number of virtual desktops to >=2
3. The main display by default has a panel with Task Manager widget on the
bottom. Right click on task manager -> Settings -> Check "Show only tasks from
current screen", "Show only tasks from current desktop" and "Show only tasks
from current activity".
4. Add an empty panel to the other display, add the Task Manager widget to it,
check the same "Show only tasks from current screen", "Show only tasks from
current desktop" and "Show only tasks from current activity" options in its
settings.
Now we have on each display own Task Manager widget which displays only windows
for current display and virtual desktop. That's what I want, everything's
great.
But if I unplug external display or plug-in a new one, then Task Manager widget
shows no windows until I uncheck "Show only tasks from current screen" option.
But in that case it shows windows from all the screens, and that's not what I
need.
The only workaround is to restart plasmashell (killall plasmashell, kstart
plasmashell), which is tedious and not always works as expected.
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