https://bugs.kde.org/show_bug.cgi?id=473729
Bug ID: 473729
Summary: xdg-desktop-portal-kde causes slow launch times
Classification: Plasma
Product: xdg-desktop-portal-kde
Version: 5.27.7
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: superm1...@outlook.de
CC: aleix...@kde.org, jgrul...@redhat.com, n...@kde.org
Target Milestone: ---
SUMMARY
When Plasma is installed, desktop environments that aren't Plasma exhibit
delays due to xdg-desktop-portal-kde
STEPS TO REPRODUCE
1. Install GNOME and KDE Plasma at the same time.
2. Log into a GNOME session
3. Launch Firefox (installed from RPM)
OBSERVED RESULT
Firefox takes about 20 to 30 seconds to start, since xdg-desktop-portal waits
for xdg-desktop-portal-kde until its timeout is reached. This only happens once
per session. After the first time, Firefox starts immediately. The issue
reoccurs after logging out and logging back in again.
EXPECTED RESULT
xdg-desktop-portal-kde recognizes that it's not in a Plasma session and exits
(or does whatever it needs to do to not hold up xdg-desktop-portal). Firefox
starts immediately.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora Linux 38
KDE Plasma Version: Plasma 5.27.7
KDE Frameworks Version: 5.109.0
Qt Version: 5.15.10
ADDITIONAL INFORMATION
In the moment in which I click on Firefox for the first time in a session, the
following output appears in journalctl --user --unit
plasma-xdg-desktop-portal-kde.service :
Aug 24 17:36:07 maximaschine xdg-desktop-portal-kde[16704]: QSocketNotifier:
Can only be used with threads started with QThread
In the moment in which Firefox actually starts, the following output appears in
journalctl --user --unit xdg-desktop-portal.service :
Aug 24 17:36:32 maximaschine xdg-desktop-por[16427]: Failed to create settings
proxy: Error calling StartServiceByName for
org.freedesktop.impl.portal.desktop.kde: Timeout was reached
The plasma-xdg-desktop-portal-kde.service unit is considered "running" by
systemd after this, though. It just doesn't seem to provide the interfaces it
needs to.
I also came across this issue previously in a Hyprland session on Arch on a
different machine, so this isn't specific to GNOME, Fedora or this computer.
The issue can be worked around by running systemctl --user mask
plasma-xdg-desktop-portal-kde.service although this will obviously leave the
Plasma install in a somewhat broken state.
GNOME actually seems to have had a similar issue in the past [1] but according
to the linked thread this was fixed.
[1] https://github.com/flatpak/xdg-desktop-portal/issues/998
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