Bug 484338 - Window title distortion when using fractional scaling on two monitors
Summary: Window title distortion when using fractional scaling on two monitors
Status: RESOLVED DUPLICATE of bug 438401
Alias: None
Product: kwin
Classification: Plasma
Component: aurorae (show other bugs)
Version: 6.0.2
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: multiscreen
Depends on:
Blocks:
 
Reported: 2024-03-23 17:29 UTC by AlexDeLorenzo.dev
Modified: 2024-06-04 11:51 UTC (History)
3 users (show)

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


Attachments
Normal titlebar (36.21 KB, image/png)
2024-03-23 17:29 UTC, AlexDeLorenzo.dev
Details
Distorted titlebar (34.68 KB, image/png)
2024-03-23 17:29 UTC, AlexDeLorenzo.dev
Details

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Description AlexDeLorenzo.dev 2024-03-23 17:29:22 UTC
Created attachment 167664 [details]
Normal titlebar

SUMMARY
I have two monitors, one scaled to 100%, the other scaled to 120%. 

Sometimes, when moving windows between the two, kwin title bar text and decorations appear blurry, distorted and corrupted.

STEPS TO REPRODUCE
1. Have two screens, enable fractional scaling 
2. Open a window on one screen
3. Drag it to another

OBSERVED RESULT
Sometimes the window title bar is pixelated and distorted. See the attached screenshot for an example.

EXPECTED RESULT
Window title bar should render clearly on both screens

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Graphics Platform: Wayland

ADDITIONAL INFORMATION
This looks identical to this error from a few years ago, just not as much distortion: https://bugs.kde.org/show_bug.cgi?id=438401

In the attached screenshots, note the pixelation of the window title text (no three 0's are the same) and buttons compared to the non-distorted screenshot
Comment 1 AlexDeLorenzo.dev 2024-03-23 17:29:51 UTC
Created attachment 167665 [details]
Distorted titlebar
Comment 2 righn 2024-04-10 23:40:20 UTC
Same here, on a laptop with 1440p internal display at 125% and 1080p external display at 100%.

On the internal display everything looks fine, but if I disable scaling, titlebar becomes distorted too. On the external display at 100% looks distorted, 125% looks fine.

SOFTWARE/OS VERSIONS
Operating System: EndeavourOS 
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.3
Graphics Platform: Wayland
Comment 3 David Edmundson 2024-06-04 11:51:42 UTC

*** This bug has been marked as a duplicate of bug 438401 ***