Bug 487099

Summary:	Blank or blinking secondary display
Product:	[Plasma] kwin	Reporter:	f.o.akhmetov
Component:	platform-drm	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	kv3f5ves, xaver.hugl
Priority:	NOR
Version First Reported In:	6.0.4
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description f.o.akhmetov 2024-05-16 11:50:47 UTC

SUMMARY
Lenovo Yoga Pro 7 14APH8, Fedora 40 + Plasma 6.0.4. Occasionally, when my laptop wakes up, or secondary display is unplugged and plugged back (via HDMI), secondary display becomes either blinking or full blank one showing cursor only.
After laptop reboot, everything works correctly.

STEPS TO REPRODUCE
1. put laptop to sleep --> wake it up / unplug and re-plug secondary display

OBSERVED RESULT
https://imgur.com/a/T1y5krM

SOFTWARE/OS VERSIONS
Linux: Fedora 40
KDE Plasma Version: 6.0.4 
KDE Frameworks Version: 6.2.0
Qt Version:  6.7.0

Comment 1 Iizuki 2024-08-23 05:53:06 UTC

Does your blinking respond to cursor movements by any chance? I'm experiencing this weird situation where the desktop blinks black for a while the moment I move my cursor. It does blink randomly too. Only on Wayland and HDMI.

Comment 2 Zamundaaa 2025-01-10 17:34:32 UTC

Sorry we took so long to get to this. Is this still happening in Plasma 6.2? If so, please attach the output of drm_info with the monitor connected

Comment 3 f.o.akhmetov 2025-01-12 19:35:59 UTC

No, not anymore. I believe since Plasma 6.1 everything is working alright.

Comment 4 Zamundaaa 2025-01-12 22:58:02 UTC

Great!