I recently upgraded my Kubuntu box from SC 4.3 to 4.4 today, and there seems to have been a casualty in the process. I like to have various Picture Frame plasmoids littered along my desktop, and I use the "smooth scaling" option so the images won't have jagged edges from a quick resizing. Since the upgrade, smooth scaling doesn't seem to work.

Here's an example of a Picture Frame containing a large wallpaper image, resized to the size shown, with smooth scaling checked in the settings:


Has anyone experience/solved this issue? Although I'm not new to programming, I've in the past never had any success in trying to compile anything KDE-related, so I'm hesitant to try to figure out how to download, modify, compile, and run a plasmoid for trying to troubleshoot the problem myself.

I usually don't use the picture frame but I tried it out after reading your post and apparently I'm having the same problem.

The funny thing is, that enabling the "smooth scaling" checkbox actually reduces the jagged edges a tiny bit, but it still looks ugly. Also, the preview picture in the config dialog looks just fine.

Definitely a BUG.

Thanks for the confirmation that it isn't just me seeing this. Maybe I'll have to track down the source code for this and see if I can't make heads or tails of it.

I'm having the same problem here. Borders in the picture looks Ugly.



Is the same after resizing from 1600+ or 800+

Release notes for KDE 4.4.1 list

Various fixes in Plasma widgets and other addons, such as the analog clock and the picture frame

but the Picture Frame's smooth scaling is still broken and as such the Picture Frame remains unusable.

The option is no longer there in KDE SC 4.5 post-beta 2, but a quick check showed that scaling is now smooth. So the problem should be fixed in 4.5.

So, smooth by default and mandatory? That's great.