Bug 387806

Summary:	Task bar of secondary screen is empty when there is no primary screen
Product:	[Plasma] plasmashell	Reporter:	Alberto Torres Ruiz <kungfoobar>
Component:	Task Manager and Icons-Only Task Manager widgets	Assignee:	Eike Hein <hein>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	alexander.stehlik, guillo.far, johannespfrang+kde, nate, plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.9.4
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Alberto Torres Ruiz 2017-12-11 20:41:52 UTC

Have two screens, two taskbars, each with setting "show windows only in current screen".

Disconnect the primary screen (or in my case, close the laptop lid by mistake). Reconnect it.

Now the task bar of the secondary screen is empty, but the screen is still full of windows. Moving them around doesn't fix the problem.

It took me a while to notice there is no active screen in display settings, and when setting an active screen it works again.

Comment 1 Alexander Stehlik 2018-05-17 11:57:19 UTC

I have a similar problem.

When I change the setting in the taskbar of the primary screen to "show windows only in current screen" the windows that were visible before disappear even if they are in the same screen.

Moving them from one screen to another and back does not fix the problem. The taskbar stays empty.

Comment 2 Alexander Stehlik 2018-05-17 11:58:29 UTC

Sorry, forgot to mention:

Running Fedora 27 with KDE-Plasma 5.12.5 and KDE-Frameworks 5.44.0

Comment 3 Guillermo 2018-10-18 14:51:31 UTC

I suppose I have a related problem, this happens when connecting my Lenovo Thinkpad to the Thinkpad Docker Pro Station. When I unplugged and plugged a again (the docker is connected to two screens), the task bar gets empty, I have to uncheck "Show only tasks from current screen" and then appear again. 

Using Plasma 5.14 in Solus.

Comment 4 Guillermo 2018-10-18 14:52:12 UTC

I suppose I have a related problem, this happens when connecting my Lenovo Thinkpad to the Thinkpad Docker Pro Station. When I unplugged and plugged a again (the docker is connected to two screens), the task bar gets empty, I have to uncheck "Show only tasks from current screen" and then appear again. 

Using Plasma 5.14 in Solus.

Comment 5 Nate Graham 2020-07-12 03:16:15 UTC


*** This bug has been marked as a duplicate of bug 414743 ***