Bug 427452

Summary:	lock screen unsplash wallpaper chooser does not take differing display aspect ratios into account
Product:	[Plasma] plasmashell	Reporter:	sneak <sneak+kde>
Component:	Picture of the Day wallpaper	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	minor	CC:	aleixpol, bshah, i, nate, qydwhotmail
Priority:	NOR	Keywords:	multiscreen
Version First Reported In:	5.27.2
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	dropdown menu bug, other issue, please advise where to file here's the actual bug screenshot

Description sneak 2020-10-08 15:01:18 UTC

SUMMARY


STEPS TO REPRODUCE

0. have two side portrait displays, and one center landscape display, in an H configuration.
1. choose "picture of the day", "unsplash" or "astronomy" or whatever, category "4k", "scaled"

OBSERVED RESULT

side screen lock wallpaper is distorted

EXPECTED RESULT

an image that is the correct aspect ratio is chosen, such as the ones that ship with KDE and selectable under "image"

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.17.5
(available in About System)
KDE Plasma Version: 5.17.5
KDE Frameworks Version: 5.66.0
Qt Version: 5.12.7

ADDITIONAL INFORMATION

there's a second bug which I don't know where to file regarding the actual dropdown menus in the settings that cuts off the "positioning" options, which I will submit as another attachment momentarily.

Comment 1 sneak 2020-10-08 15:03:22 UTC

Created attachment 132214 [details]
dropdown menu bug, other issue, please advise where to file

dropdown menu bug, other issue, please advise where to file

Comment 2 sneak 2020-10-08 15:04:34 UTC

My 11.8MB png screenshot taken with spectacle is too large to attach here (3x 4k displays).  I had to install Krita to export it to jpeg, you may wish to up the attachment maximum size limit on the bugtracker to 20-50MiB to adjust for larger displays.

Comment 3 sneak 2020-10-08 15:05:27 UTC

Created attachment 132215 [details]
here's the actual bug screenshot

Comment 4 sneak 2020-10-08 15:09:26 UTC

"scaled, ke[ep aspect ratio]" (brackets presumed, as i can't see the letters) letterboxes the image, predictably.

It seems that the image should either be rotated on the other displays with different aspect ratios, or three different appropriate-aspect images chosen?

Comment 5 sneak 2020-10-08 15:10:58 UTC

The first option, "Scaled an"[whatever], seems to do approximately the right thing but the image selected from the source is usually too low res for the display.  I suppose that's not a bug in KDE, though.

Comment 6 Nate Graham 2025-05-28 20:04:22 UTC

It's doing what you asked it to: "scaled" will scale the image to fit the screen by distorting its proportions. If you have any screens with radically different proportions from the source image, then "scaled" isn't a good positioning setting to use.