https://bugs.kde.org/show_bug.cgi?id=508369
Bug ID: 508369
Summary: KWin crashes after waking monitors from standby at
login with HDR enabled.
Classification: Plasma
Product: kwin
Version First 6.4.4
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: generic-crash
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 184169
--> https://bugs.kde.org/attachment.cgi?id=184169&action=edit
kcrash backtrace
SUMMARY
I’m experiencing a very persistent and reproducible crash of KWin on my
machine. The crash occurs every time when I lock my session and allow the
screens to enter standby while HDR is enabled for either monitor. It does not
happen if the screens get turned off without the session being locked. It also
does not happen when HDR is disabled for both monitors.
When I later wake the system (not hibernating or suspend to ram) and the
monitors turn back on, but before I log in, I hear the ping from KCrash. After
logging in, normally KWin has already restarted, but all my running
applications have crashed, and KCrash prompts me to submit a crash report.
Sometimes KWin does not restart automatically, and I have to manually start it
using "plasmashell --replace & disown".
STEPS TO REPRODUCE
1. Lock the Session
2. Wait for the configured 1 min until my screens go to standby
3. Wake the system
SOFTWARE/OS VERSIONS
Linux: Arch linux
Kernel: 6.16.1-2-cachyos
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
Nvidia driver version: 580.76.05
ADDITIONAL INFORMATION
I have 2 2560p x 1440p 120hz HDR monitors connected via Display Port.
I’ve attached the backtrace provided by KCrash as well as what I believe is the
relevant portion of the systemd journal.
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