Bug 466427

Summary: Wayland compositor crashed when changing display scale of primary monitor from 300% to 200%.
Product: [Plasma] kwin Reporter: Roke Julian Lockhart Beedell <4wy78uwh>
Component: wayland-genericAssignee: Roke Julian Lockhart Beedell <4wy78uwh>
Status: RESOLVED WORKSFORME    
Severity: crash CC: nate, nicolas.fella
Priority: NOR Keywords: drkonqi
Version: 5.27.0   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Screenshot of output of sudo + initial command specified by documentation.

Description Roke Julian Lockhart Beedell 2023-02-25 19:22:23 UTC
Application: akonadiserver (5.22.2 (22.12.2))

Qt Version: 5.15.8
Frameworks Version: 5.103.0
Operating System: Linux 6.1.12-1-default x86_64
Windowing System: Wayland
Distribution: "openSUSE Tumbleweed"
DrKonqi: 5.27.0 [KCrashBackend]

-- Information about the crash:
Wayland compositor crashed when changing display scale of primary monitor from 300% to 200%. All active applications disappeared. May have been caused by changing which monitor was primary, but I don't know whether I did that before or immediately after it crashed.

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: Akonadi Server (akonadiserver), signal: Segmentation fault

[KCrash Handler]
#4  0x000056426eb40323 in ?? ()
#5  0x00007f06d5707d00 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#6  0x00007f06d56dc1bd in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#7  0x00007f06d56df181 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#8  0x00007f06d5734413 in ?? () from /lib64/libQt5Core.so.5
#9  0x00007f06d391ba90 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#10 0x00007f06d391be48 in ?? () from /lib64/libglib-2.0.so.0
#11 0x00007f06d391bedc in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#12 0x00007f06d5733c16 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#13 0x00007f06d56dac5b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#14 0x00007f06d56e2dc6 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#15 0x000056426eb367a1 in ?? ()
#16 0x00007f06d4e2caf0 in __libc_start_call_main () from /lib64/libc.so.6
#17 0x00007f06d4e2cbb9 in __libc_start_main_impl () from /lib64/libc.so.6
#18 0x000056426eb39265 in ?? ()
[Inferior 1 (process 19809) detached]

Reported using DrKonqi
Comment 1 Nate Graham 2023-02-28 20:44:56 UTC
Unfortunately this bug report only has a crash of the akonadi server. Can you attach a backtrace for kwin_wayland?
Comment 2 Roke Julian Lockhart Beedell 2023-03-01 15:29:18 UTC
(In reply to Nate Graham from comment #1)
> Unfortunately this bug report only has a crash of the akonadi server. Can
> you attach a backtrace for kwin_wayland?

Glad to. Do you have the specific commands to run? I don't know how to.

If this report looks like it's missing something (such as the desired backtrace) that might be because I had to force-kill drkonqi after about an hour of it endlessly "submitting report".
Comment 4 Roke Julian Lockhart Beedell 2023-03-14 17:18:50 UTC
(In reply to Nate Graham from comment #3)
> Yep, see
> https://community.kde.org/Guidelines_and_HOWTOs/Debugging/
> How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl.

That documentation is vaguely confusing, and anyway, I don't have the time currently to read through it. Can you just tell me the exact commands to run? I'm happy to provide the output, if the logs still exist. I'm using the same system and OS, so ideally they should.
Comment 5 Nate Graham 2023-03-15 14:59:15 UTC
The section I linked you to tells you exactly what you need to do. I can't give you the commends myself because they will be different depending on the output of `coredumpctl --reverse`.
Comment 6 Roke Julian Lockhart Beedell 2023-03-16 21:14:12 UTC
Created attachment 157341 [details]
Screenshot of output of sudo + initial command specified by documentation.

(In reply to Nate Graham from comment #5)
> The section I linked you to tells you exactly what you need to do. I can't
> give you the commends myself because they will be different depending on the
> output of `coredumpctl --reverse`.

My last log is from 2023-03-03T13:54:10+0000 rather than 2023-02-25T19:22Z, which appears to be when bugzilla reports that this reported. Reckon that the log has been lost?
Comment 7 Bug Janitor Service 2023-03-31 03:45:26 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
mark the bug 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 8 Bug Janitor Service 2023-04-15 03:45:45 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now 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

Thank you for helping us make KDE software even better for everyone!
Comment 9 Nate Graham 2023-04-17 15:32:46 UTC
Still waiting for a backtrace of the crashing kwin_wayland process. We can't move forward without it.
Comment 10 Bug Janitor Service 2023-05-02 03:46:12 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
mark the bug 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 11 Bug Janitor Service 2023-05-17 03:46:06 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now 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

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