Bug 488350

Summary: System freezes due to fault in kwin
Product: [Plasma] kwin Reporter: Ricky Cheung <rcheung844>
Component: effects-window-managementAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED WORKSFORME    
Severity: major CC: nate
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Ricky Cheung 2024-06-11 13:17:52 UTC 
***
If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org

If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***

SUMMARY
System freezes due to fault in kwin
It was tested during the below logs being generated that the system itself is still running. This was achieved by the use of KDE Connect.

STEPS TO REPRODUCE
N/A

OBSERVED RESULT
System appears to freeze, probably rendering stopped.

EXPECTED RESULT
N/A

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux / 6.0-2
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.0

ADDITIONAL INFORMATION
```
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:03 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:03 TipzLab-Z690 kernel: sched: RT throttling activated
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:05 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:06 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:07 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: possible QQuickItem::polish() loop
Jun 11 20:54:08 TipzLab-Z690 kwin_wayland[1639]: qrc:/qt/qml/org/kde/kwin/private/effects/WindowHeap.qml:124:5: QML ExpoLayout: ExpoLayout called polish() inside updatePolish() of ExpoLayout
```
Comment 1 Nate Graham 2024-06-12 17:58:18 UTC 
> This was achieved by the use of KDE Connect.
> 
> STEPS TO REPRODUCE
> N/A

It sounds like you do in fact know what you did to make this happen; can you please write steps to reproduce? Thanks!
Comment 2 Ricky Cheung 2024-06-15 13:38:16 UTC 
(In reply to Nate Graham from comment #1)
> > This was achieved by the use of KDE Connect.
> > 
> > STEPS TO REPRODUCE
> > N/A
> 
> It sounds like you do in fact know what you did to make this happen; can you
> please write steps to reproduce? Thanks!

No, in fact, I don't.
What I meant was that I checked whether the system was running or locked up after it had locked up, with KDE Connect.
I did so by using the Playback Control feature in KDE Connect to control videos and audio I had opened, which played with the correct actions.
However, prior to the freeze, I had simply been using the system as I had. It locked up most commonly after a suspend and some more usage, but that's about it. I cannot find any correlation with this issue, it also didn't occur throughout my 3 day uptime with numerous suspend (S3) sessions.
Comment 3 Ricky Cheung 2024-06-15 13:40:07 UTC 
(In reply to Ricky Cheung from comment #2)
> (In reply to Nate Graham from comment #1)
> > > This was achieved by the use of KDE Connect.
> > > 
> > > STEPS TO REPRODUCE
> > > N/A
> > 
> > It sounds like you do in fact know what you did to make this happen; can you
> > please write steps to reproduce? Thanks!
> 
> No, in fact, I don't.
> What I meant was that I checked whether the system was running or locked up
> after it had locked up, with KDE Connect.
> I did so by using the Playback Control feature in KDE Connect to control
> videos and audio I had opened, which played with the correct actions.
> However, prior to the freeze, I had simply been using the system as I had.
> It locked up most commonly after a suspend and some more usage, but that's
> about it. I cannot find any correlation with this issue, it also didn't
> occur throughout my 3 day uptime with numerous suspend (S3) sessions.

---
> What I meant was that I checked whether the system was running or locked up
> after it had locked up, with KDE Connect.
I should have used froze in the last occurrence of this segment.
Comment 4 Nate Graham 2024-06-17 16:53:45 UTC 
Are you able to reproduce the issue again?
Comment 5 Bug Janitor Service 2024-07-02 03:47:13 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 6 Bug Janitor Service 2024-07-17 03:46:39 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!