| Summary: | XDG portal file picker "Show Preview Pane" option is greyed out during file saving in Firefox and Chromium/Chrome | ||
|---|---|---|---|
| Product: | [Plasma] xdg-desktop-portal-kde | Reporter: | Richard Steven Hack <richardstevenhack> |
| Component: | general | Assignee: | Plasma Bugs List <plasma-bugs-null> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | 4wy78uwh, aleixpol, jgrulich, kde, nate |
| Priority: | NOR | ||
| Version First Reported In: | 5.27.8 | ||
| Target Milestone: | --- | ||
| Platform: | openSUSE | ||
| OS: | Linux | ||
| See Also: | https://bugzilla.mozilla.org/show_bug.cgi?id=1859420 | ||
| Latest Commit: | https://invent.kde.org/plasma/xdg-desktop-portal-kde/-/commit/0b87b05a787cb5e7beb41dde569e47e81a56690c | Version Fixed In: | 6.4.0 |
| Sentry Crash Report: | |||
| Attachments: | Picture of greyed out Show Preview Pane option in KDE File Picker | ||
|
Description
Richard Steven Hack
2023-10-15 20:09:38 UTC
Created attachment 162328 [details]
Picture of greyed out Show Preview Pane option in KDE File Picker
Can reproduce. However it doesn't happen in our reference portal test implementation, which means it's being disabled in Firefox's code somehow. I'd recommend that you submit a bug report to them. Thanks! *** Bug 504127 has been marked as a duplicate of this bug. *** (In reply to Nate Graham from comment #2) > I'd recommend that you submit a bug report to them. Posted to https://bugzilla.mozilla.org/show_bug.cgi?id=1966479#field-value-short_desc:~:text=2025%2D05%2D14%2018:06%20UTC-,The%20KDE%20File%20Picker%20Portal%20has%20its%20%22Preview%22%20pane%20disabled%20when%20invoked%20by%20Firefox.,-Categories%20(Firefox%20, since this reproduces for me, too, and is a pain. (In reply to Roke Julian Lockhart Beedell from comment #4) Ah, damn. Missed the frigging link. Ignore me. There is an issue with browsers on the openSUSE Tumbleweed system not using the KDE XDG portal and defaulting to the GTK portal. This issue occurred on my machine and the Beelink mini PC next to it (also running openSUSE Tumbleweed.) Working with Google Gemini 2.5 Pro Preview yesterday (which has an awesome amount of KDE knowledge in its training data), I came up with a (possibly temporary) fix for that, by creating and editing a portals.conf in /etc/xdg-desktop-portal as shown below: cd /etc/xdg-desktop-portal -rw-r--r-- 1 root root 24 May 14 15:10 portals.conf /etc/xdg-desktop-portal> cat portals.conf [preferred] default=kde Today, the issue of the lack of a preview panel is resolved on both my machines. I can only assume the two problems are related. It's possible something else changed, of course, so I'm just mentioning this in passing. I don't think this is distro-specific; I can reproduce it myself on Fedora 42 KDE with KDE software built from source code. If that fixes the issue for you, perhaps the problem is in these browsers for trying to force the use of the GNOME portal or something? KDirOperator conditionally enables preview support depending on the types of files being shown. For that it checks the current filters and if those mime types have preview support. However it fails to resolve name filters like "*.[pP][nN][gG]". But it can resolve "*.png" and "*.PNG" A possibly relevant merge request was started @ https://invent.kde.org/plasma/xdg-desktop-portal-kde/-/merge_requests/399 Git commit 96339a76adea65071233f0cb85d05b43f2f8e548 by David Redondo. Committed on 11/06/2025 at 13:01. Pushed by davidre into branch 'master'. filechooser: Normalize name filters to something more common The upstream spec recommends to set filters in a form like *.[pP][nN][gG] to match upper and lower case extensions. This confuses our stack which expects filters to not include groups and matches case insensitively anyway. This patch converts name filters that are in the mentioned form to the more "normal" one. FIXED-IN:6.4 M +22 -0 src/filechooser.cpp https://invent.kde.org/plasma/xdg-desktop-portal-kde/-/commit/96339a76adea65071233f0cb85d05b43f2f8e548 Git commit 0b87b05a787cb5e7beb41dde569e47e81a56690c by David Redondo. Committed on 11/06/2025 at 13:11. Pushed by davidre into branch 'Plasma/6.4'. filechooser: Normalize name filters to something more common The upstream spec recommends to set filters in a form like *.[pP][nN][gG] to match upper and lower case extensions. This confuses our stack which expects filters to not include groups and matches case insensitively anyway. This patch converts name filters that are in the mentioned form to the more "normal" one. FIXED-IN:6.4 (cherry picked from commit 96339a76adea65071233f0cb85d05b43f2f8e548) Co-authored-by: David Redondo <kde@david-redondo.de> M +22 -0 src/filechooser.cpp https://invent.kde.org/plasma/xdg-desktop-portal-kde/-/commit/0b87b05a787cb5e7beb41dde569e47e81a56690c |