Bug 369102

Summary:	Creating panel on second monitor leads to mouse freezing
Product:	[Plasma] plasmashell	Reporter:	mhruscak
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	major	CC:	kde
Priority:	NOR
Version First Reported In:	5.7.95
Target Milestone:	1.0
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description mhruscak 2016-09-20 07:55:21 UTC

If panel is created on second connected monitor, it leads to immediate freeze of whole system, not only plasmashell. Mouse and keyboard become unresponsive for many 0.5-2.0sec long periods.
Need to mention, that it only happen if I trying to add Default panel. Empty panel is ok though.
Helps only killing plasmashell.


Reproducible: Always

Steps to Reproduce:
1. install KDE
2. connect second display
3. slightly change default panel(add new widget) on first display
4. try to create "Default" panel on second monitor

Actual Results:  
Many freezes, system unresponsive

Expected Results:  
Panel should be created

Same happens if system is powered-off with 2 displays connected and then turned on with only one connected. Second panel jumps to first monitor and freezes.

Comment 1 David Edmundson 2016-09-21 13:01:21 UTC

Does this happen every time?

Can you run from a konsole

gdb plasmashell

then when it freezes alt+tab to konsole
press control+C and then type "bt" and copy and paste here.

We do have one open bug from a similar cause, I'd like to check it's the same.

Comment 2 mhruscak 2016-09-21 13:44:06 UTC

Unfortunately no, because I have switched back to KDE4 meanwhile.

Comment 3 David Edmundson 2016-09-21 22:45:49 UTC

Then we've got nowhere to go from here.