Bug 494496 - Display lag when moving windows in Wayland
Summary: Display lag when moving windows in Wayland
Status: RESOLVED DUPLICATE of bug 477223
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (show other bugs)
Version: 6.2.0
Platform: openSUSE Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: regression, wayland
Depends on:
Blocks:
 
Reported: 2024-10-11 00:05 UTC by David S
Modified: 2024-10-22 17:28 UTC (History)
5 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
Video showing issue (2.87 MB, video/x-matroska)
2024-10-11 00:05 UTC, David S
Details

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Description David S 2024-10-11 00:05:19 UTC
Created attachment 174661 [details]
Video showing issue

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SUMMARY
In Wayland only there is massive display lag moving windows around. This is true on a single or multiple monitors.


STEPS TO REPRODUCE
1. Install all available updates after 10/07/24
2. Log in using Wayland (no issues in x11)
3. Move windows around the screen

OBSERVED RESULT
Very noticeable lag moving windows to to point they tear in pieces and jump around

EXPECTED RESULT
Smooth, buttery motion

SOFTWARE/OS VERSIONS
(available in the Info Center app, or by running `kinfo` in a terminal window)
Operating System: openSUSE Tumbleweed 20241009
KDE Plasma Version: 6.2.0
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.3
Kernel Version: 6.11.2-1-default (64-bit)
Graphics Platform: Wayland
Processors: 28 × Intel® Core™ i7-14700
Memory: 62.6 GiB of RAM
Graphics Processor: Mesa Intel® Graphics


ADDITIONAL INFORMATION
See attached video of issue. This goes away if I use X11 or if I revert to my snapshot from 10/7/24
Comment 1 duha.bugs 2024-10-11 21:22:27 UTC
This might be https://bugs.kde.org/show_bug.cgi?id=494382
Comment 2 David S 2024-10-13 15:19:07 UTC
(In reply to duha.bugs from comment #1)
> This might be https://bugs.kde.org/show_bug.cgi?id=494382

I reviewed 494382 and its very likely this is the same issue. Mine seems related to night light. 

What made this so confusing is it would be fine in the morning but NOT the evening! Right now its late morning and Im experiencing no issue, but night light hasnt activated yet. I turned it on manually and instant lag! For me at least, if I disable night light the issue is mostly if not totally fixed.
Comment 3 David S 2024-10-14 12:20:05 UTC

*** This bug has been marked as a duplicate of bug 494382 ***
Comment 4 Nate Graham 2024-10-22 17:28:05 UTC

*** This bug has been marked as a duplicate of bug 477223 ***