Bug 394189

Summary:	KWin crashes on pressing Alt + Tab
Product:	[Plasma] kwin	Reporter:	Sandeep <sandy.8925>
Component:	platform-wayland-nested	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	sandy.8925
Priority:	NOR	Keywords:	triaged
Version First Reported In:	5.12.5
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Sandeep 2018-05-13 06:17:00 UTC

KWin consistently crashes whenever I attempt to switch windows using Alt + Tab. I have attempted to use gdb to get a stack trace, but for some reason the entire system hangs if I attach gdb to kwin and reproduce the crash (can't even switch to a VT).

The best I have is this:

Thread 1 "kwin_wayland" received signal SIGSEGV, Segmentation fault.
0x00007f90c30f8bc4 in QPlatformWindow::setGeometry(QRect const&) () from /usr/lib/libQt5Gui.so.5

Comment 1 Sandeep 2018-05-13 07:02:26 UTC

So......I rebuilt KWin debug build, and now it doesn't crash.....well, I will try using it as is for the next few days, and see what happens.

Comment 2 Martin Flöser 2018-05-13 16:01:39 UTC

Setting to needsinfo backtrace till we have a good backtrace.

For the future: no need to report crashes if you don't have the backtrace. If you have one it's awesome, if you don't have one the bug report is not useful at all (you can assume that a functionality like alt+tab normally works, so we cannot reproduce it).

Comment 3 Andrew Crouthamel 2018-09-28 03:36:33 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Sandeep 2018-09-28 22:34:32 UTC

I no longer face the bug, it was fixed a while back.