https://bugs.kde.org/show_bug.cgi?id=470546
Bug ID: 470546
Summary: xdg-desktop-portal-kde starts too early, causing dbus
reads to return incorrect values
Classification: Plasma
Product: xdg-desktop-portal-kde
Version: 5.27.5
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: k...@scheimong.net
CC: aleix...@kde.org, jgrul...@redhat.com, n...@kde.org
Target Milestone: ---
# SUMMARY
`qdbus org.freedesktop.portal.Desktop /org/freedesktop/portal/desktop
org.freedesktop.portal.Settings.Read org.freedesktop.appearance color-scheme`
is not correctly reporting the user's preferred theme (dark/light) after
startup. Only after manually restarting `xdg-desktop-portal-kde` (`systemctl
--user restart plasma-xdg-desktop-portal-kde.service`) does it work correctly.
See here
(https://invent.kde.org/plasma/xdg-desktop-portal-kde/-/merge_requests/52#note_691671)
for how I ran into this problem + initial triage.
# STEPS TO REPRODUCE
1. Make sure `xdg-desktop-portal` and `xdg-desktop-portal-kde` are installed
2. Set your KDE theme to `Breeze Dark`
3. Restart your OS
4. Run `qdbus org.freedesktop.portal.Desktop /org/freedesktop/portal/desktop
org.freedesktop.portal.Settings.Read "org.freedesktop.appearance"
"color-scheme"`
5. Run `systemctl --user restart plasma-xdg-desktop-portal-kde.service`
6. Repeat step 4
# OBSERVED RESULT
The dbus query (step 4) prints 2. Then after restart, the same query (step 6)
prints 1.
# EXPECTED RESULT
They should both print 1.
# SOFTWARE/OS VERSIONS
- OS: EndeavourOS with all updates (as of 2023-06-02)
- Kernel: `6.3.5-arch1-1`
- Display server: X11
- Plasma: `5.27.5`
- Framework: `5.106.0`
- Qt: `5.15.9`
- xdg-desktop-portal: `1.16.0`
- xdg-desktop-portal-kde: `5.27.5`
# ADDITIONAL INFORMATION
I tested this on several different systems at my disposal. The results are
somewhat curious.
- Both of my EndeavourOS KDE laptops have this issue
- Neither of my two tested VMs have this issue, including:
- EndeavourOS KDE
- Fedora 38 KDE
- I also have Debian 11 but it only has KDE `5.20.5`, so I was not able to
test it
Related bug: https://bugs.kde.org/show_bug.cgi?id=458865
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