Bug 482452

Summary: Wallpaper all of a sudden becomes incorrectly sized
Product: [Plasma] plasmashell Reporter: Sergio <sergio.callegari>
Component: Image & Slideshow wallpaper pluginsAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED WORKSFORME    
Severity: minor CC: nate, notmart, qydwhotmail
Priority: NOR Keywords: multiscreen
Version First Reported In: 5.27.10   
Target Milestone: 1.0   
Platform: Manjaro   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Sergio 2024-03-05 10:35:22 UTC 
SUMMARY

While one works, all of a sudden the display wallpaper become incorrectly sized and too small, occupying only the top left corner of the screen, leaving a black area to the right and to the bottom.

I am experiencing this on an arch derivative (Manjaro) that being a rolling distro should be completely up to date wrt Plasma components. The setup uses Wayland.

The problem occurs using 2 screens (laptop screen + external monitor), using the external monitor as primary, when the external monitor has a very high resolution (4k). Both screens use scaling for HiDPI (the external monitor, being very large, employs a more moderate scaling), but I do not know how relevant this may be.

I have been unable to understand what triggers the problem. When you connect the monitor, everything is fine. As you work all of a sudden the background flashes and becomes too small.

Disconnecting and reconnecting the monitor or changing its resolution from the control panel to then revert it back fixes the issue.

Don't know how important this issue is as of today, since I cannot test on plasma 6 yet.

STEPS TO REPRODUCE

Unfortunately the issue is erratic and a proper way to reproduce has not been identified.

OBSERVED RESULT

All of a sudden the wallpaper becomes smaller than the screen estate and top left aligned, leaving a black area to the right and to the bottom.

EXPECTED RESULT

The wall paper remains OK.

SOFTWARE/OS VERSIONS

Operating System: Manjaro Linux 
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.12
Kernel Version: 6.7.4-2-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 9 6900HS with Radeon Graphics
Memory: 30.6 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: ROG Zephyrus G14 GA402RK_GA402RK
System Version: 1.0
Comment 1 Nate Graham 2024-03-05 21:23:45 UTC 
We did a lot of multi-screen improvements in Plasma 6 that may have fixed this. Can I ask you to upgrade to Plasma 6 and try again? Thanks a lot!
Comment 2 Bug Janitor Service 2024-03-20 03:45:56 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Bug Janitor Service 2024-04-04 03:47:11 UTC 
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!