Bug 513251

Summary: KWin (KDE Window Manager) freezes intermittently during the use of the touchpad or mouse, especially when editing text.
Product: [Plasma] kwin Reporter: plabs <plabs>
Component: compositingAssignee: KWin default assignee <kwin-bugs-null>
Status: NEEDSINFO WAITINGFORINFO    
Severity: normal CC: nicolas.fella, plabs, xaver.hugl
Priority: NOR    
Version First Reported In: 6.5.4   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description plabs@henu.edu.cn 2025-12-12 12:58:16 UTC 
KWin (KDE Window Manager) freezes intermittently during the use of the touchpad or mouse, especially when editing text.

STEPS TO REPRODUCE
1.Boot up the system.
2.Begin using the touchpad to move the cursor or use the mouse.
3.Start typing in a text editor (e.g., Kate, KWrite, etc.) or interact with other UI elements.
4.After some time, KWin freezes, and window manager functions become unresponsive. 

OBSERVED RESULT
KWin freezes after some usage.
The graphical interface becomes unresponsive, and no input is accepted.
The system may recover after a while or require restarting the window manager (kwin_wayland --replace).

EXPECTED RESULT
KWin should not freeze during regular use.
The system should remain responsive when interacting with UI elements and using input devices like the touchpad or mouse.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux with KDE Plasma
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.17.9-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Graphics Processor 1: NVIDIA GeForce RTX 3050 Ti Laptop GPU
Graphics Processor 2: Intel® Iris® Xe Graphics
Processors: 16 × 12th Gen Intel® Core™ i5-12500H
Memory: 32 GiB of RAM (31.0 GiB usable)

ADDITIONAL INFORMATION
see
https://invent.kde.org/-/snippets/3622
https://invent.kde.org/-/snippets/3619 
https://invent.kde.org/-/snippets/3620
https://invent.kde.org/-/snippets/3621


OTHERS
I hope this message finds you well. I wanted to bring to your attention a bug that I’ve encountered in the latest version of KDE Plasma (version 6.5.4). It’s been causing some significant disruptions in my workflow, and I would greatly appreciate it if this issue could be addressed as soon as possible.
I understand that you may have many tasks to prioritize, but this issue is quite urgent for me, and any progress or resolution would be extremely helpful.
If there is any additional information or clarification needed from my side, please feel free to reach out. I am more than happy to assist in any way I can to help resolve this.
Thank you very much for your time and consideration. I look forward to hearing from you soon.
Comment 1 Zamundaaa 2025-12-12 14:07:19 UTC 
Is the bug new with this version / if you downgrade KWin to 6.5.3, does it go away again?

If yes, this might be a different symptom of bug 513151
Comment 2 plabs@henu.edu.cn 2025-12-13 07:01:49 UTC 
(In reply to Zamundaaa from comment #1)
> Is the bug new with this version / if you downgrade KWin to 6.5.3, does it
> go away again?
> 
> If yes, this might be a different symptom of bug 513151

I tested with the NVIDIA proprietary (closed-source) driver. After downgrading KWin to 6.5.3, the freeze/hang issue is noticeably less frequent, but it still happens intermittently.A high-frequency trigger is right after boot/login, when I start using the touchpad (cursor movement/gestures). The device is an ASUS TUF Gaming (Tianxuan 3) laptop.
Comment 3 Bug Janitor Service 2025-12-28 03:46:33 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.

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