Bug 321015

Summary:	Task bar disappear/reappear randomly.
Product:	[Unmaintained] plasma4	Reporter:	nhduong
Component:	widget-taskbar	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED UNMAINTAINED
Severity:	major
Priority:	NOR
Version First Reported In:	4.10.3
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	How to get the problem to appear.

Description nhduong 2013-06-10 23:35:44 UTC

The taskbar at the bottom of the screen occasionally disappears. Sometimes the taskbar is not shown at log in, other times when a program is run (firefox, kdemenuedit, printer... and lots of others.) Sometimes the taskbar reappears when another program is run, sometimes not. The only cure seems to be logout and log back in.
This problem starts when I updated to 4.10 from 4.9. Currently I'm at 4.10.2. I have little hope I will resolve with >4.10.2.
I know I can add another pannel but it is pretty cumbersome.
Regards.

Reproducible: Sometimes

Steps to Reproduce:
1. The problem is random but very often, certainly every session.
2. There is no way to reliably reproduce it. Just keep starting up new program and the taskbar will surely disappear after a while (a few minutes at most.)
3.



Linux 3.7.1 #1 SMP PREEMPT Fri Mar 22 18:45:18 EST 2013 i686 Intel(R) Pentium(R) D CPU 2.80GHz GenuineIntel GNU/Linux

Comment 1 Aaron J. Seigo 2013-06-15 14:00:30 UTC

A backtrace is required to know what the cause of the problem is. It is not neccessarily the taskbar widget, it could be a number of other components that make up the panel and the application it is in. Thanks.

See:

http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports

Comment 2 nhduong 2013-06-22 23:24:51 UTC

Created attachment 80722 [details]
How to get the problem to appear.

The steps to cause the problem to appear on my system:
1) Set the pannel to auto-hide.
2) Log out of KDE.
3) Log in to KDE, but do not touch the mouse.
Moving the mouse to the bottom, or anywhere else for that matter, does not cause the taskbar to appear.

Please note that this is not a crash, therfore there is no crash report. My KDE is now at updated to 4.10.3 but the problem remains.

Comment 3 nhduong 2013-06-22 23:51:10 UTC

At step 3) do not touch the mouse until the KDE login process has entirely finished.

Comment 4 Andrew Crouthamel 2018-09-04 19:07:09 UTC

Hello! Plasma 4 was replaced by Plasma 5 four years ago by the KDE community. In that time we have made great strides in stability and functionality. We are closing all Plasma 4 bugs as most of them are no longer applicable to the new frameworks Plasma 5 is built upon. If you could, please re-test with the latest version of Plasma 5, and submit a new bug to "plasmashell" if you continue to have an issue. Thank you!