Bug 466405

Summary:	Wallpapers flicker on activity switch
Product:	[Plasma] plasmashell	Reporter:	gudvinr+kde
Component:	Containment	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	kde, nate, notmart, qydwhotmail
Priority:	NOR
Version First Reported In:	5.27.1
Target Milestone:	1.0
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description gudvinr+kde 2023-02-25 13:34:27 UTC

SUMMARY

When you switch activities, wallpapers flicker.

If that's important, I have 2 monitors (4k@150% and 2k@115%) with total screen real estate of 5280x2560px².


STEPS TO REPRODUCE
1. Create multiple activities (I have 4)
2. Set different wallpapers for each screen on each activity (8 in total)
3. Start switching activities

OBSERVED RESULT
When you switch from one activity to another, screen starts flickering on activity switch.
Visually it looks like transition happens like this:
old wallpaper > black > new wallpaper

EXPECTED RESULT
No flickering

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.27.1
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.12-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Graphics Processor: AMD Radeon RX Vega M GL Graphics

ADDITIONAL INFORMATION
Apologies if thats wrong category for this bug, I am not sure where it should go. It is kinda activity related but wallpaper handling itslef doesn't seem to be an activity thing.

Comment 1 Fushan Wen 2023-03-05 14:42:36 UTC

Can reproduce, not sure how to fix it. Perhaps by saving the thumbnail of the old containment?

Comment 2 Nate Graham 2023-04-10 00:11:02 UTC

I think we would have to, yeah. But don't we already do that in support of the thumbnails displayed in the "Manage Desktops and Panels" window?

Comment 3 Fushan Wen 2023-04-10 07:08:19 UTC


*** This bug has been marked as a duplicate of bug 452104 ***