https://bugs.kde.org/show_bug.cgi?id=521020
Bug ID: 521020
Summary: --headless-update hangs indefinitely on broken flatpak
remotes, blocking all GUI launches via single-instance
mechanism
Classification: Applications
Product: Discover
Version First unspecified
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: discover
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
When DiscoverNotifier spawns plasma-discover --headless-update at login, and a
broken user flatpak remote exists (e.g. one pointing at a local flatpak-builder
build cache with no summary file), Discover hangs indefinitely trying to
refresh that
remote. Because Discover enforces a single-instance via D-Bus
(org.kde.discover), every subsequent GUI launch is silently absorbed by the
stuck headless process — Discover appears to simply not launch with no error
shown to the user.
The stuck process can run for days. The only fix is to kill it manually.
Steps to reproduce:
1. Have a user flatpak remote pointing at a local path that is not a valid
flatpak repository (e.g. a flatpak-builder build cache created by
flatpak-builder --install). These remotes are named *-origin and *-debug-origin
and are auto-created by
flatpak-builder.
2. Log in to a KDE Plasma session — DiscoverNotifier spawns plasma-discover
--headless-update at startup.
3. Observe that plasma-discover --headless-update runs indefinitely (visible
in ps), never exiting.
4. Attempt to launch Discover from the application menu or taskbar — nothing
happens, no window appears, no error.
Expected behavior:
--headless-update should time out or skip remotes that fail to refresh (e.g.
return "server has no summary file"), then exit cleanly so the D-Bus name is
released and GUI launches work normally.
Actual behavior:
--headless-update hangs indefinitely on the broken remote. The D-Bus
single-instance name is held, silently swallowing all GUI launch attempts.
i am sorry this descption was largely ai generated. but is an actual issue i
ran it. discover never opens until i kill it first
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