Bug 513119 - Persistent screentearing at the lower half of the screen- I dont how how to stop it either
Summary: Persistent screentearing at the lower half of the screen- I dont how how to s...
Status: REPORTED
Alias: None
Product: kate
Classification: Applications
Component: application (other bugs)
Version First Reported In: 25.08.3
Platform: Fedora RPMs Linux
: NOR minor
Target Milestone: ---
Assignee: KWrite Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-12-09 03:36 UTC by Anony Mous
Modified: 2025-12-13 16:55 UTC (History)
1 user (show)

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


Attachments
Screen tears at that area of the screen (2.71 MB, image/jpeg)
2025-12-09 03:36 UTC, Anony Mous
Details

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Description Anony Mous 2025-12-09 03:36:03 UTC
Created attachment 187451 [details]
Screen tears at that area of the screen

SUMMARY
Screen tearing around the lower middle that wont go away- I am seeing it for like 3 weeks now, This must be a software issue. It's annoying tho, I restart my computer daily (Shut it down) yet it still happens.


STEPS TO REPRODUCE
1. Open Kate
2. Theres a black line even if no file is open, But open a file
3. Now the black line is a sorta colorful black line- Screen tearing

OBSERVED RESULT
A horizontal line that indicates some gpu bug?

EXPECTED RESULT
clean writing area

SOFTWARE/OS VERSIONS
Windows: Null
macOS: Null
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Fedora Linux 42
KDE Plasma Version:  6.5.3
KDE Frameworks Version: 6.20.0
Qt Version:  6.9.3

ADDITIONAL INFORMATION
Kernel : 6.17.9-200
CPU: Intel i5-1235U
GPU: Iris Xe
RAM: 8GB DDR4 3200Mhz

By the way, my distro originally had GNOME- I used dnf swap to change to KDE Plasma, I dont know if thats a issue- Still worth mentioning ig
Comment 1 Christoph Cullmann 2025-12-11 18:43:09 UTC
Hmm, is that line only in Kate?
Does the line move with the Kate window or stays fixed at absolute screen coordinates.
Have you some non 100% scale factor?
Comment 2 Anony Mous 2025-12-11 21:00:13 UTC
(In reply to Christoph Cullmann from comment #1)
> Hmm, is that line only in Kate?
> Does the line move with the Kate window or stays fixed at absolute screen
> coordinates.
> Have you some non 100% scale factor?

Yeah it stays with the kate window- Not my displays problem sure

Because other apps such as GIMP, Or- Literally Firefox, or my display doesnt has that
Comment 3 Anony Mous 2025-12-11 21:04:28 UTC
(In reply to Christoph Cullmann from comment #1)
> Hmm, is that line only in Kate?
> Does the line move with the Kate window or stays fixed at absolute screen
> coordinates.
> Have you some non 100% scale factor?

I dont have a non-100% Scale factor for my enire UI- But i do sometimes use a non-100 scale in kate itself- Like Ctrl+Mouse scroll
Thought thats worth mentioning
Comment 4 Christoph Cullmann 2025-12-12 07:28:42 UTC
Hmm, ok, then that is strange, with no global scaling, I would not have thought there is a chance we miss to paint stuff, but perhaps there is.
Comment 5 Anony Mous 2025-12-13 06:00:55 UTC
Hey, while reading this i discovered my internal screen uses 125%
external uses 115%

Sorry for this mistake, I overlooked the screen size
Comment 6 Christoph Cullmann 2025-12-13 14:07:31 UTC
(In reply to Anony Mous from comment #5)
> Hey, while reading this i discovered my internal screen uses 125%
> external uses 115%
> 
> Sorry for this mistake, I overlooked the screen size

Does it happen on both screens?
Comment 7 Anony Mous 2025-12-13 16:55:20 UTC
(In reply to Christoph Cullmann from comment #6)
> (In reply to Anony Mous from comment #5)
> > Hey, while reading this i discovered my internal screen uses 125%
> > external uses 115%
> > 
> > Sorry for this mistake, I overlooked the screen size
> 
> Does it happen on both screens?

Weirdly, No,- it happens on my external one only, 115%
Also i had some better shots of the glitch
It happens to happen in my main monitor only, 
But few days ago, I think it happened on my laptop monitor too.. Cant say for sure- Ext. Monitor, Sure

https://drive.proton.me/urls/8YR1VSGTK4#LIa83KU2EVFG
(also you dont need to download the images, three dot menu -> Preview)