Bug 502693 - Spectacle screen recording preview garbled on Wayland
Summary: Spectacle screen recording preview garbled on Wayland
Status: REPORTED
Alias: None
Product: Spectacle
Classification: Applications
Component: General (show other bugs)
Version: 6.3.4
Platform: Neon Linux
: NOR normal
Target Milestone: ---
Assignee: Noah Davis
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-04-11 21:07 UTC by Daniel Duris
Modified: 2025-04-16 17:20 UTC (History)
3 users (show)

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


Attachments
well, peek was not able to screenshot spectacle either, it seems (5.04 KB, image/gif)
2025-04-14 09:43 UTC, Daniel Duris
Details
photo of the garbled preview state (3.78 MB, image/jpeg)
2025-04-14 09:44 UTC, Daniel Duris
Details

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Description Daniel Duris 2025-04-11 21:07:09 UTC
SUMMARY
The preview of recording looks like green lines all over, garbled, nothing visible, weirdly sheared or such...

STEPS TO REPRODUCE
1. Run Spectacle screen recording 
2. Stop and play the video in the preview

OBSERVED RESULT
Garbled video

EXPECTED RESULT
Preview working

SOFTWARE/OS VERSIONS
Operating System: KDE neon 6.3
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.2
Kernel Version: 6.11.0-21-generic (64-bit)
Graphics Platform: Wayland
Comment 1 John Kizer 2025-04-14 03:00:54 UTC
Hi - can you please specify which recording mode you were using - Rectangular Region, Full Screen, or Window? Or, does the issue show up on your device when using all of those?

Is it only the preview in Spectacle itself that appears glitchy, or does that show up when playing the resulting video in a video player application?

Can you also please share what graphics card your system uses?

Thanks!
Comment 2 Daniel Duris 2025-04-14 09:42:35 UTC
(In reply to John Kizer from comment #1)
> Hi - can you please specify which recording mode you were using -
> Rectangular Region, Full Screen, or Window? Or, does the issue show up on
> your device when using all of those?
> 
> Is it only the preview in Spectacle itself that appears glitchy, or does
> that show up when playing the resulting video in a video player application?
> 
> Can you also please share what graphics card your system uses?
> 
> Thanks!

It's happening for any mode, rectangular of full window. The preview is always garbled.

Graphics Processor: Mesa Intel® Arc

I'll post the screenshot (difficult to screenshot the screenshot app Spectacle... or impossible probably, so I had to use Peek to record it as a gif).
Comment 3 Daniel Duris 2025-04-14 09:43:14 UTC
Created attachment 180252 [details]
well, peek was not able to screenshot spectacle either, it seems
Comment 4 Daniel Duris 2025-04-14 09:44:41 UTC
Created attachment 180253 [details]
photo of the garbled preview state
Comment 5 Daniel Duris 2025-04-14 09:47:52 UTC
Funny thing is that screencast (the video) itself is totally fine. Just the preview is garbled/does not work.