Bug 471912 - [Wayland] Blur effect flickers and sometimes occupies only a quarter of the window
Summary: [Wayland] Blur effect flickers and sometimes occupies only a quarter of the w...
Status: REPORTED
Alias: None
Product: kwin
Classification: Plasma
Component: effects-various (show other bugs)
Version: 6.0.2
Platform: Other Linux
: NOR minor
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: wayland-only
Depends on:
Blocks:
 
Reported: 2023-07-03 18:47 UTC by medin
Modified: 2024-08-20 15:56 UTC (History)
4 users (show)

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


Attachments
Blur effect flickers after applet appears and sometimes occupies only a quarter of the window (3.85 MB, video/webm)
2023-07-03 18:47 UTC, medin
Details
Blur occupies a quarter (776.56 KB, image/png)
2024-03-14 15:24 UTC, medin
Details
Blur occupying top left quarter - Audiotube (378.94 KB, image/png)
2024-04-19 18:47 UTC, medin
Details

Note You need to log in before you can comment on or make changes to this bug.
Description medin 2023-07-03 18:47:16 UTC
Created attachment 160064 [details]
Blur effect flickers after applet appears and sometimes occupies only a quarter of the window

See attached video for more info.
Comment 1 Fushan Wen 2024-03-14 14:23:33 UTC
There are some changes regarding to loading the album art. Is it still an issue in Plasma 6?
Comment 2 medin 2024-03-14 15:23:31 UTC
(In reply to Fushan Wen from comment #1)
> There are some changes regarding to loading the album art. Is it still an
> issue in Plasma 6?

It's still repro on Plasma 6.0.2 both with videos from browser and local media, this problem appears when you use and click on the media player widget many times. See attached image.

Operating System: Manjaro Linux 
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.7.9-1-MANJARO (64-bit)
Graphics Platform: Wayland
Comment 3 medin 2024-03-14 15:24:30 UTC
Created attachment 167174 [details]
Blur occupies a quarter
Comment 4 medin 2024-04-19 18:47:50 UTC
Created attachment 168688 [details]
Blur occupying top left quarter - Audiotube

This problem of blur effect occupying only top left quarter is affecting many apps: AudioTube, SDDM, Haruna Player, Media Player widget.

It's always reproducible on laptops with 1366*768 screen size.
Comment 5 TraceyC 2024-08-19 21:09:09 UTC
I'm not able to reproduce this on 6.1.4  with Haruna Player or Media Player widget.
I tested with a few different resolutions, including a laptop display set to 1366*768@100%
I'm also not seeing problems with SDDM

Could you share your settings for window translucency and the blur effect itself? In Bug 485822, the reporter noted they saw artifacts at lower blur strengths.

Thanks!
Comment 6 medin 2024-08-19 21:41:55 UTC
(In reply to TraceyC from comment #5)
> I'm not able to reproduce this on 6.1.4  with Haruna Player or Media Player
> widget.
> I tested with a few different resolutions, including a laptop display set to
> 1366*768@100%
> I'm also not seeing problems with SDDM
> 
> Could you share your settings for window translucency and the blur effect
> itself? In Bug 485822, the reporter noted they saw artifacts at lower blur
> strengths.
> 
> Thanks!

I have transparency set to Opaque, and blur effect disabled, it happens on 3 laptops (Intel iGPU) both with blur enabled and disabled, and it's still reproducible on Plasma 6.1.4.
Comment 7 TraceyC 2024-08-20 15:56:06 UTC
Thank you for the additional detail. Even with those settings, I can't reproduce the problem with any application I try. Hopefully someone else will be able to.