Bug 487168 - KWin 1.5x UI Scaling + 2256x1504 results in garbage pixels at the bottom of the screen
Summary: KWin 1.5x UI Scaling + 2256x1504 results in garbage pixels at the bottom of t...
Status: RESOLVED DUPLICATE of bug 482987
Alias: None
Product: kwin
Classification: Plasma
Component: core (show other bugs)
Version: unspecified
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-05-18 03:45 UTC by Wyatt Childers
Modified: 2024-05-18 20:52 UTC (History)
2 users (show)

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


Attachments
pixels on the lock screen that don't belong (138.57 KB, image/jpeg)
2024-05-18 03:45 UTC, Wyatt Childers
Details
app icons when unlocked (127.70 KB, image/jpeg)
2024-05-18 03:45 UTC, Wyatt Childers
Details
a short video of the glitch on the lock screen (1.71 MB, video/mp4)
2024-05-18 04:11 UTC, Wyatt Childers
Details

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Description Wyatt Childers 2024-05-18 03:45:18 UTC
Created attachment 169585 [details]
pixels on the lock screen that don't belong

SUMMARY
On my Framework 13" I've noticed the bottom row of pixels is occasionally "garbage" like it isn't properly being used by either Plasma or Kwin.

This effect carries over to the lock screen where some of the blue outline from the Icon Only task Manager can still be seen (see the attached screen shots).

REPRODUCTION
I believe to reproduce this you need a 2256x1504 (such as the one used by the framework, and a 1.5x scaling factor). 

When I turned off scaling, I could no longer see the buggy pixels. Enabling scaling again lead me to see the bottom row of pixels from the 1.0x scale factor (tiny status icons) at the bottom of the lock screen.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 40
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
Kernel Version: 6.5.6-300.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7840U w/ Radeon 780M Graphics
Memory: 14.9 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: Framework
Product Name: Laptop 13 (AMD Ryzen 7040Series)
System Version: A7

ADDITIONAL INFORMATION

This is similar to Bug 460896 but I believe it's different (related to KWin's scaling).
Comment 1 Wyatt Childers 2024-05-18 03:45:59 UTC
Created attachment 169586 [details]
app icons when unlocked
Comment 2 Wyatt Childers 2024-05-18 04:11:02 UTC
Created attachment 169587 [details]
a short video of the glitch on the lock screen

This is an interesting one as it shows the glitch occurring with pixels that seemingly have nothing to do with anything.

This isn't limited to just happening on the lock screen, but it demonstrates how weird and distracting this case be. 

Sometimes things move like this, sometimes they don't.
Comment 3 Zamundaaa 2024-05-18 20:52:41 UTC
*** This bug has been marked as a duplicate of bug 482987 ***