Bug 499377

Summary:	Screen green on left side, black on right side. When locking half is green while other half black for 1-2 seconds.
Product:	[Plasma] kwin	Reporter:	CronyAkatsuki <crony>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	kdedev, xaver.hugl, zvp2001x
Priority:	NOR
Version First Reported In:	6.2.5
Target Milestone:	---
Platform:	NixOS
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Picture of locking/loggin flash Gif of appmenu flashes

Description CronyAkatsuki 2025-02-01 08:33:28 UTC

SUMMARY
The screen when loging into system flashes with left side green and right side black, appmenu always flashes green when opening with animations flashing. Locking the screen also produces the half green/half black effect for a couple seconds.

OBSERVED RESULT
Green/black flashes across the system, when animations enabled. If they are disabled they don't happen.

EXPECTED RESULT
Smooth experience with no system flashing.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.12.11
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.1

ADDITIONAL INFORMATION
I used plasma6 on nixos about 10 months ago with no issues but stopped using about 9 months ago. Installed it again 3 days ago and found this issue happenning from a fresh install but seeing how it didn't affect functionality of the system I left it be until it started to annoy me, Looking at the internet there was only ever one case of something like this reported on reddit with no fix.

I tried to record the appmenu issue and locking with obs but they don't show up on the recording so I had to use my phone to do it.

Comment 1 CronyAkatsuki 2025-02-01 08:35:27 UTC

Created attachment 177872 [details]
Picture of locking/loggin flash

Comment 2 CronyAkatsuki 2025-02-01 08:43:49 UTC

Created attachment 177873 [details]
Gif of appmenu flashes

Here is a link to my nixos config also, in case it might be a misconfiguration issue: https://code.cronyakatsuki.xyz/crony/nix-conf

Comment 3 Zamundaaa 2025-05-15 16:30:19 UTC

Does the issue disappear f you disable blur and contrast effects?

Comment 4 Bug Janitor Service 2025-05-30 03:48:15 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 5 Bug Janitor Service 2025-06-14 03:48:03 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.

Comment 6 Vlad 2025-10-28 19:51:14 UTC

I'm facing exact same issues in 2 different distros: Nixos and CashyOS.

My current system info:
Operating System: CachyOS Linux 
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.4-2-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 4 × AMD Ryzen 3 2200U with Radeon Vega Mobile Gfx
Memory: 8 GiB of RAM (6.7 GiB usable)
Graphics Processor: AMD Radeon Vega 3 Graphics.

If I need to provide any extra information or screenshoots/screencapture, ask for it

Comment 7 TraceyC 2025-11-13 19:29:49 UTC

(In reply to Vlad from comment #6)
> If I need to provide any extra information or screenshoots/screencapture,
> ask for it

Can you provide the information Zamundaaa had asked for:
Does the issue disappear f you disable blur and contrast effects?

Comment 8 Bug Janitor Service 2025-11-28 03:46:10 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 9 Bug Janitor Service 2025-12-13 03:46:20 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.