Bug 1700270

Confirming. Also after upgrade to Fedora 30.

First of all, you shouldn't be using xdg-desktop-portal-kde in Gnome, instead install xdg-desktop-portal-gtk. Can you in a terminal run:
1) killall xdg-desktop-portal-kde
2) QT_LOGGING_RULES='xdp*.debug=true' /usr/libexec/xdg-desktop-portal-kde

Then try to reproduce the issue and attach the output here.

*** Bug 1707954 has been marked as a duplicate of this bug. ***

I am affected by this bug too.

(In reply to Jan Grulich from comment #2)
> First of all, you shouldn't be using xdg-desktop-portal-kde in Gnome,
> instead install xdg-desktop-portal-gtk.

I have xdg-desktop-portal-gtk running, it works fine. I don't know why xdg-desktop-portal-kde is running, but it is being started at every login as child of `/usr/lib/systemd/systemd --user`, as is xdg-desktop-portal and xdg-desktop-portal-kde and xdg-document-portal.

> Can you in a terminal run:
> 1) killall xdg-desktop-portal-kde
> 2) QT_LOGGING_RULES='xdp*.debug=true' /usr/libexec/xdg-desktop-portal-kde
> 
> Then try to reproduce the issue and attach the output here.

The output does not look like it contains anything interesting:

$ QT_LOGGING_RULES='xdp*.debug=true' /usr/libexec/xdg-desktop-portal-kde
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
xdp-kde-wayland-integration: Egl initialization succeeded
xdp-kde-wayland-integration: "EGL version: 1.4"
xdp-kde: Desktop portal registered successfully
xdp-kde-wayland-integration: Registry initialized
xdp-kde-wayland-integration: Adding output:
xdp-kde-wayland-integration:     manufacturer:  "BNQ"
xdp-kde-wayland-integration:     model:  "BenQ RL2450H"
xdp-kde-wayland-integration:     resolution:  QSize(1920, 1080)


Maybe the backtrace I reported in bug #1707954 helps.

Can you kill xdg-desktop-portal and start it with "G_MESSAGES_DEBUG=all /usr/libexec/xdg-desktop-portal" to see what portals it uses?

Created attachment 1566741 [details]
$ killall xdg-desktop-portal && G_MESSAGES_DEBUG=all /usr/libexec/xdg-desktop-portal

KDE is listed only twice in the logs, first when loading the module
> loading /usr/share/xdg-desktop-portal/portals/kde.portal

and then later during some proxy initialization stuff:
> Falling back to kde.portal for org.freedesktop.impl.portal.Settings

So the only portal used from xdg-desktop-portal-kde seems to be Settings portal, I think this might be already fixed in Plasma 5.15.5 with this [1] commit. You can either try this or wait until we update it in Fedora.

[1] - https://cgit.kde.org/xdg-desktop-portal-kde.git/commit/?h=Plasma/5.15&id=045302b5292cb62da5843906825c04898d6656d7

bluedevil-5.15.5-1.fc30 breeze-gtk-5.15.5-1.fc30 grub2-breeze-theme-5.15.5-1.fc30 kactivitymanagerd-5.15.5-1.fc30 kde-cli-tools-5.15.5-1.fc30 kde-gtk-config-5.15.5-1.fc30 kdecoration-5.15.5-1.fc30 kdeplasma-addons-5.15.5-1.fc30 kgamma-5.15.5-1.fc30 khotkeys-5.15.5-1.fc30 kinfocenter-5.15.5-1.fc30 kmenuedit-5.15.5-1.fc30 kscreen-5.15.5-1.fc30 kscreenlocker-5.15.5-1.fc30 ksshaskpass-5.15.5-1.fc30 ksysguard-5.15.5-1.fc30 kwayland-integration-5.15.5-1.fc30 kwin-5.15.5-1.fc30 kwrited-5.15.5-1.fc30 libkscreen-qt5-5.15.5-1.fc30 libksysguard-5.15.5-1.fc30 pam-kwallet-5.15.5-1.fc30 plasma-breeze-5.15.5-1.fc30 plasma-browser-integration-5.15.5-1.fc30 plasma-desktop-5.15.5-1.fc30 plasma-discover-5.15.5-1.fc30 plasma-drkonqi-5.15.5-1.fc30 plasma-integration-5.15.5-1.fc30 plasma-milou-5.15.5-1.fc30 plasma-nm-5.15.5-1.fc30 plasma-oxygen-5.15.5-1.fc30 plasma-pa-5.15.5-1.fc30 plasma-sdk-5.15.5-1.fc30 plasma-systemsettings-5.15.5-1.fc30 plasma-user-manager-5.15.5-1.fc30 plasma-vault-5.15.5-1.fc30 plasma-workspace-5.15.5-1.fc30 plasma-workspace-wallpapers-5.15.5-1.fc30 plymouth-kcm-5.15.5-1.fc30 plymouth-theme-breeze-5.15.5-1.fc30 polkit-kde-5.15.5-1.fc30 powerdevil-5.15.5-1.fc30 sddm-kcm-5.15.5-1.fc30 xdg-desktop-portal-kde-5.15.5-2.fc30 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-c8b2331683

bluedevil-5.15.5-1.fc30 breeze-gtk-5.15.5-1.fc30 grub2-breeze-theme-5.15.5-1.fc30 kactivitymanagerd-5.15.5-1.fc30 kde-cli-tools-5.15.5-1.fc30 kde-gtk-config-5.15.5-1.fc30 kdecoration-5.15.5-1.fc30 kdeplasma-addons-5.15.5-1.fc30 kgamma-5.15.5-1.fc30 khotkeys-5.15.5-1.fc30 kinfocenter-5.15.5-1.fc30 kmenuedit-5.15.5-1.fc30 kscreen-5.15.5-1.fc30 kscreenlocker-5.15.5-1.fc30 ksshaskpass-5.15.5-1.fc30 ksysguard-5.15.5-1.fc30 kwayland-integration-5.15.5-1.fc30 kwin-5.15.5-1.fc30 kwrited-5.15.5-1.fc30 libkscreen-qt5-5.15.5-1.fc30 libksysguard-5.15.5-1.fc30 pam-kwallet-5.15.5-1.fc30 plasma-breeze-5.15.5-1.fc30 plasma-browser-integration-5.15.5-1.fc30 plasma-desktop-5.15.5-1.fc30 plasma-discover-5.15.5-1.fc30 plasma-drkonqi-5.15.5-1.fc30 plasma-integration-5.15.5-1.fc30 plasma-milou-5.15.5-1.fc30 plasma-nm-5.15.5-1.fc30 plasma-oxygen-5.15.5-1.fc30 plasma-pa-5.15.5-1.fc30 plasma-sdk-5.15.5-1.fc30 plasma-systemsettings-5.15.5-1.fc30 plasma-user-manager-5.15.5-1.fc30 plasma-vault-5.15.5-1.fc30 plasma-workspace-5.15.5-1.fc30 plasma-workspace-wallpapers-5.15.5-1.fc30 plymouth-kcm-5.15.5-1.fc30 plymouth-theme-breeze-5.15.5-1.fc30 polkit-kde-5.15.5-1.fc30 powerdevil-5.15.5-1.fc30 sddm-kcm-5.15.5-1.fc30 xdg-desktop-portal-kde-5.15.5-2.fc30 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-c8b2331683

bluedevil-5.15.5-1.fc30, breeze-gtk-5.15.5-1.fc30, grub2-breeze-theme-5.15.5-1.fc30, kactivitymanagerd-5.15.5-1.fc30, kde-cli-tools-5.15.5-1.fc30, kde-gtk-config-5.15.5-1.fc30, kdecoration-5.15.5-1.fc30, kdeplasma-addons-5.15.5-1.fc30, kgamma-5.15.5-1.fc30, khotkeys-5.15.5-1.fc30, kinfocenter-5.15.5-1.fc30, kmenuedit-5.15.5-1.fc30, kscreen-5.15.5-1.fc30, kscreenlocker-5.15.5-1.fc30, ksshaskpass-5.15.5-1.fc30, ksysguard-5.15.5-1.fc30, kwayland-integration-5.15.5-1.fc30, kwin-5.15.5-1.fc30, kwrited-5.15.5-1.fc30, libkscreen-qt5-5.15.5-1.fc30, libksysguard-5.15.5-1.fc30, pam-kwallet-5.15.5-1.fc30, plasma-breeze-5.15.5-1.fc30, plasma-browser-integration-5.15.5-1.fc30, plasma-desktop-5.15.5-1.fc30, plasma-discover-5.15.5-1.fc30, plasma-drkonqi-5.15.5-1.fc30, plasma-integration-5.15.5-1.fc30, plasma-milou-5.15.5-1.fc30, plasma-nm-5.15.5-1.fc30, plasma-oxygen-5.15.5-1.fc30, plasma-pa-5.15.5-1.fc30, plasma-sdk-5.15.5-1.fc30, plasma-systemsettings-5.15.5-1.fc30, plasma-user-manager-5.15.5-1.fc30, plasma-vault-5.15.5-1.fc30, plasma-workspace-5.15.5-1.fc30, plasma-workspace-wallpapers-5.15.5-1.fc30, plymouth-kcm-5.15.5-1.fc30, plymouth-theme-breeze-5.15.5-1.fc30, polkit-kde-5.15.5-1.fc30, powerdevil-5.15.5-1.fc30, sddm-kcm-5.15.5-1.fc30, xdg-desktop-portal-kde-5.15.5-2.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-c8b2331683

bluedevil-5.15.5-1.fc30, breeze-gtk-5.15.5-1.fc30, grub2-breeze-theme-5.15.5-1.fc30, kactivitymanagerd-5.15.5-1.fc30, kde-cli-tools-5.15.5-1.fc30, kde-gtk-config-5.15.5-1.fc30, kdecoration-5.15.5-1.fc30, kdeplasma-addons-5.15.5-1.fc30, kgamma-5.15.5-1.fc30, khotkeys-5.15.5-1.fc30, kinfocenter-5.15.5-1.fc30, kmenuedit-5.15.5-1.fc30, kscreen-5.15.5-1.fc30, kscreenlocker-5.15.5-1.fc30, ksshaskpass-5.15.5-1.fc30, ksysguard-5.15.5-1.fc30, kwayland-integration-5.15.5-1.fc30, kwin-5.15.5-1.fc30, kwrited-5.15.5-1.fc30, libkscreen-qt5-5.15.5-1.fc30, libksysguard-5.15.5-1.fc30, pam-kwallet-5.15.5-1.fc30, plasma-breeze-5.15.5-1.fc30, plasma-browser-integration-5.15.5-1.fc30, plasma-desktop-5.15.5-1.fc30, plasma-discover-5.15.5-1.fc30, plasma-drkonqi-5.15.5-1.fc30, plasma-integration-5.15.5-1.fc30, plasma-milou-5.15.5-1.fc30, plasma-nm-5.15.5-1.fc30, plasma-oxygen-5.15.5-1.fc30, plasma-pa-5.15.5-1.fc30, plasma-sdk-5.15.5-1.fc30, plasma-systemsettings-5.15.5-1.fc30, plasma-user-manager-5.15.5-1.fc30, plasma-vault-5.15.5-1.fc30, plasma-workspace-5.15.5-1.fc30, plasma-workspace-wallpapers-5.15.5-1.fc30, plymouth-kcm-5.15.5-1.fc30, plymouth-theme-breeze-5.15.5-1.fc30, polkit-kde-5.15.5-1.fc30, powerdevil-5.15.5-1.fc30, sddm-kcm-5.15.5-1.fc30, xdg-desktop-portal-kde-5.15.5-2.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.

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I have not seen this issue for a long while on Fedora 31.