Bug 487099 - Blank or blinking secondary display
Summary: Blank or blinking secondary display
Status: RESOLVED WORKSFORME
Alias: None
Product: kwin
Classification: Plasma
Component: platform-drm (show other bugs)
Version: 6.0.4
Platform: Fedora RPMs Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-05-16 11:50 UTC by f.o.akhmetov
Modified: 2025-01-12 22:58 UTC (History)
2 users (show)

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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!