Bug 486062

Summary:	Plamsa Shell Segmentation Fault when System is idle over night
Product:	[Plasma] plasmashell	Reporter:	daniel.pullen
Component:	generic-crash	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	akselmo, nate
Priority:	NOR	Keywords:	drkonqi
Version:	6.0.4
Target Milestone:	1.0
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description daniel.pullen 2024-04-24 11:12:24 UTC

Application: plasmashell (6.0.4)

Qt Version: 6.7.0
Frameworks Version: 6.1.0
Operating System: Linux 6.8.7-arch1-1 x86_64
Windowing System: Wayland
Distribution: "Arch Linux"
DrKonqi: 6.0.4 [CoredumpBackend]

-- Information about the crash:
For a few nights in a row, I have come back to my computer in the morning with a segmentation fault from plasma shell. In the first case, the machine was unresponsive. However, the two successive times, the system "recovered" and I had the crash handler window. When these happen, I am not using the machine. Given that the faults happen when I am aware from the machine, I unfortunately do not have much information to share about the cause.

The crash can be reproduced sometimes.

-- Backtrace (Reduced):
#5  QWeakPointer<QObject>::internalData (this=0x60) at /usr/include/qt6/QtCore/qsharedpointer_impl.h:750
#6  QPointer<QScreen>::data (this=0x60) at /usr/include/qt6/QtCore/qpointer.h:74
#7  QPointer<QScreen>::operator QScreen* (this=0x60) at /usr/include/qt6/QtCore/qpointer.h:82
#8  DesktopView::screenToFollow (this=0x0) at /usr/src/debug/plasma-workspace/plasma-workspace-6.0.4/shell/desktopview.cpp:140
#9  ShellCorona::screenInvariants (this=<optimized out>) at /usr/src/debug/plasma-workspace/plasma-workspace-6.0.4/shell/shellcorona.cpp:859


Reported using DrKonqi

Comment 1 daniel.pullen 2024-04-24 11:12:26 UTC

Created attachment 168860 [details]
New crash information added by DrKonqi

DrKonqi auto-attaching complete backtrace.

Comment 2 daniel.pullen 2024-04-24 12:28:17 UTC

After a bit of testing this morning, I can confirm the exact steps that make this happen.

1. Lock the screen
2. Wait for the monitors to go to sleep (the system is not sleeping, just turning the monitors off)
3. Wake the monitors up and login.

During this time, the only applications open are Firefox, Yakuake, and Zoom.

Comment 3 daniel.pullen 2024-04-25 12:16:00 UTC

I have done some additional testing since my last update. As best as I can tell, this crash occurs regardless of the applications open in the foreground or background when the system is idle.

Comment 4 Akseli Lahtinen 2024-06-10 13:31:26 UTC

Seems something emits that screen has changed but there's no screen (?) to change to, so it crashes.

DesktopView::screenToFollow (this=0x0) at /usr/src/debug/plasma-workspace/plasma-workspace-6.0.4/shell/desktopview.cpp:140

Comment 5 Nate Graham 2024-07-31 03:56:37 UTC


*** This bug has been marked as a duplicate of bug 468430 ***