Re: F43 Change Proposal: Switch to JXL format for Default Wallpaper (self-contained)

[Luya Tshimbalanga <luya@xxxxxxxxxxxxxxxxx>]

On 2025-02-26 13:12, Michael Catanzaro wrote:

On Mon, Feb 24 2025 at 01:54:15 PM -05:00:00, Neal Gompa <ngompa13@xxxxxxxxx> wrote:

Didn't we already do this? I adapted KDE Plasma, MiracleWM, LXQt, and
COSMIC for this in F42 already.

And now GNOME is switching back to regular JPEG, see:

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6886#note_2360630
https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas/-/merge_requests/102

So if we're aiming for consistency, we have already failed....

Author of the proposal here. It looks like the change recently happened few days ago and the proposal is indeed for Fedora 42 Beta
which should give enough chances to find unexpected bugs before the final release. Let remind Fedora used PNG format for default wallpaper for a very long time
instead of JPEG.

Thanks for sending the ticket here and looking at

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6886#note_2360630

upstream JPEG-XL developers are very active investigating the root cause linking both gdk-pixbuf-loader and djxl to the slowdown as highlighted
on https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6886#note_2363790

Should the issue fail to get solved upstream before the final release, we can defer for Fedora 43 and switch back to PNG. It is up to FESCo.

-- 
Luya Tshimbalanga
Fedora Design Team
Fedora Design Suite maintainer

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