Bug 488890

Summary: Option to set different wallpapers for different displays, as with the desktop
Product: [Applications] systemsettings Reporter: gudvinr+kde
Component: kcm_screenlockerAssignee: Plasma Bugs List <plasma-bugs-null>
Status: CONFIRMED ---    
Severity: wishlist CC: heri+kde, nate
Priority: NOR    
Version First Reported In: 6.1.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description gudvinr+kde 2024-06-21 13:21:54 UTC 
SUMMARY

In multi-display configuration, you can select different desktop wallpapers for each display.
You can't do that from lock screen appearance configuration.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.1.0
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.1
Kernel Version: 6.9.5-arch1-1 (64-bit)
Graphics Platform: X11
Comment 1 Nate Graham 2024-06-21 19:35:11 UTC 
Indeed, it's just one for all.
Comment 2 gudvinr+kde 2024-06-29 11:30:43 UTC 
Is it only KCM issue? KCMs for desktop wallpaper and lock screen appearance look very similar but can you actually use different wallpapers in kscreenlocker? That will be different from just adding display selector to KCM.
Comment 3 Dennis Schridde 2024-09-01 16:23:28 UTC 
This is particular an issue if the two screens have different aspect ratios. I can prepare a wallpaper that looks well on one screen, but then it will look bad on the other (and the reverse). I already tried different "positioning" settings to workaround this, but no luck.

For the desktop background wallpaper ("Appearance & Style > Wallpaper") I took a 16:10 image and show it as-is on the 16:10 screen. For the 21:9 screen I cropped a 21:9 section out of it, so the picture looks well on both screens. I would like to do the same for "Security & Privacy > Screen Locking". (Ideally I could set the screenlocker background setting to always follow the desktop wallpaper setting, but that's a different feature request.)