Bug 489171

Summary: Visual artifacts when moving windows over each other with NVIDIA GPU
Product: [Plasma] kwin Reporter: David <david.horak246>
Component: compositingAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED FIXED    
Severity: major CC: n8thefusion, nate
Priority: NOR    
Version First Reported In: 6.1.0   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In: 6.2.1
Sentry Crash Report:
Attachments: video of visual bug

Description David 2024-06-25 11:33:19 UTC
Created attachment 170954 [details]
video of visual bug

SUMMARY
Whenever I drag/move windows over each other on my two monitors, programs that are not focused get weird artifacts where parts of the window are really zoomed in. Once those programs are active again, the artifacts leave immediately. 
I have attached a video.
This is on wayland with proprietary nvidia drivers on Arch. Did not happen when I was previously using plasma 5 on debian (also wayland and nvidia), so I don't think it is a nvidia problem but a plasma problem.

STEPS TO REPRODUCE
1. install plasma 6.1 and nvidia drivers on Arch
2. set the right settings to enable wayland on plasma
3. log in to plasma wayland move a bunch of windows over each other

OBSERVED RESULT
background windows get weird visual artifacts

EXPECTED RESULT
background windows look normal

SOFTWARE/OS VERSIONS
Linux: Arch linux 
Kernel Version: 6.9.6-arch1-1
KDE Plasma Version: 6.1
KDE Frameworks Version: 6.3 
Qt Version: 6.7.2
Graphics Platform: Wayland
Comment 1 Nate Graham 2024-06-25 14:55:09 UTC
Graphical tearing; most likely an NVIDIA driver regression. I'll let the KWin developers say for sure.
Comment 2 Nathan 2024-06-28 02:49:38 UTC
I am getting similar artifacting on 6.1.1 on my amd gpu. Here's my info:

Operating System: Arch Linux 
KDE Plasma Version: 6.1.1
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
Kernel Version: 6.9.6-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-4770K CPU @ 3.50GHz
Memory: 15.6 GiB of RAM
Graphics Processor: AMD Radeon RX 580 Series
Manufacturer: MSI
Product Name: MS-7817
System Version: 3.0
Comment 3 David 2024-10-18 18:47:52 UTC
As of plasma 6.2.1 I am no longer experiencing this bug
Comment 4 Nate Graham 2024-10-22 18:21:08 UTC
Great news! Thanks for following up.