Bug 499962 - Programs using Chromium failed to perform Toggle Present Windows
Summary: Programs using Chromium failed to perform Toggle Present Windows
Status: RESOLVED DUPLICATE of bug 499987
Alias: None
Product: kwin
Classification: Plasma
Component: effects-window-management (other bugs)
Version First Reported In: 6.3.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-02-13 07:37 UTC by duandongyi2019
Modified: 2025-02-19 02:02 UTC (History)
1 user (show)

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


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Description duandongyi2019 2025-02-13 07:37:20 UTC
SUMMARY

Programs using Chromium, such as Chrome and VSCode, experience issues when using "Toggle Present Windows" under Wayland and screen scaling mode. These issues include failure to function, severe frame drops, and stuttering.

STEPS TO REPRODUCE
1.  Open a Chrome or vscode in wayland
2.  Press Ctrl + F10

OBSERVED RESULT
Sometimes failure to function, Sometimes severe frame drops

EXPECTED RESULT
Works same as KDE plasma 6.2.5

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma:  6.3.0
KDE Plasma Version:  6.3.0
KDE Frameworks Version: 
Qt Version:  6.8.2

ADDITIONAL INFORMATION
Launch app in xwayland mode does not make it functions too
Comment 1 duandongyi2019 2025-02-13 07:55:04 UTC
KDE Frameworks Version is 6.10.0
If you need anything else please let me know
Comment 2 duandongyi2019 2025-02-13 07:57:57 UTC
After setting the screen from 1080p/125% and 4K/200% to 1080p/100% and 4K/100%, it works properly.
Comment 3 duandongyi2019 2025-02-17 07:18:54 UTC
Correction: This issue occurs if and only if a 4K display is set to a resolution and scaling of 200% or higher.
Comment 4 duandongyi2019 2025-02-17 07:29:37 UTC
And if i disable all other displays but the 4k/200%, It works properly
Comment 5 duandongyi2019 2025-02-17 07:59:21 UTC
Oh I figue it out! Turn off the night light mode will make it works properly even with 4k/200% with two 1080p / 125% display, The night light mode is the trigger
Comment 6 cwo 2025-02-17 10:50:25 UTC
If it is fixed by turning off Night Light, I would guess it's the same cause as bug 499987; see also bug 500021 where turning off Night Light improved performance.

This should be fixed in 6.3.1, releasing tomorrow, so please reopen if it still happens after you upgrade to that version.

*** This bug has been marked as a duplicate of bug 499987 ***
Comment 7 duandongyi2019 2025-02-19 02:02:26 UTC
Yes, This bug is fixed in 6.3.1, Thanks.