Bug 374155

Summary:	kwin crash caused by touchpad on/off OSD notification
Product:	[Plasma] kwin	Reporter:	Laurent Bonnaud <L.Bonnaud>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	crash
Priority:	NOR
Version:	5.8.4
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Backtrace screenshot

Description Laurent Bonnaud 2016-12-25 21:33:46 UTC

Hi,

kwin always crashes when an OSD pop-up is displayed to notify the user that the touchpad has been switched on or off.

Here is how to reproduce this crash:

 * if your laptop has a key to activate or deactivate the touchpad, use this key

 * if not:
   - turn on this setting: Input Devices -> Touchpad -> Enable/Disable Touchpad -> Disable touchpad when mouse is plugged in
   - plug a mouse

This is with Neon packages as of today:

Package: kwin-x11
Version: 4:5.8.4+p16.04+git20161225.1132-0

Comment 1 Laurent Bonnaud 2016-12-25 21:39:47 UTC

Created attachment 102995 [details]
Backtrace screenshot

Getting a backtrace is difficult because:
 1. drkonqi does not display anything useful
 2. a crash file is created in /var/crash/ and I do not know how to extract information from this file.

I tried to get a backtrace by attaching gdb to the kwin_x11 process before the crash but I got nothing this way.

The best I could do is a screenshot from apport with the full backtrace, so here it is.

Comment 2 rооt 2016-12-25 22:11:45 UTC

possible duplicate
https://bugs.kde.org/show_bug.cgi?id=374038

Comment 3 Martin Flöser 2016-12-26 09:53:03 UTC

Quite sure it's the same issue

*** This bug has been marked as a duplicate of bug 374038 ***

Comment 4 Laurent Bonnaud 2016-12-26 14:34:13 UTC

I confirm that sound OSD also crashes kwin therefore this is the same bug.