[xdg-desktop-portal-kde] [Bug 513595] Connection already associated with an application ID

https://bugs.kde.org/show_bug.cgi?id=513595

Fede <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[email protected]
             Status|RESOLVED                    |REOPENED
     Ever confirmed|0                           |1
         Resolution|WORKSFORME                  |---

--- Comment #13 from Fede <[email protected]> ---
Adding another reproduction of this bug, with a different symptom: it silently
breaks the camera portal (org.freedesktop.portal.Camera), not just
file-open/OpenURI calls.

Setup: Fedora 44, Plasma 6.7.4, xdg-desktop-portal-kde 6.7.4-1,
xdg-desktop-portal 1.22.1, Firefox 153.0.3.

Firefox 153 uses the PipeWire/portal path for camera access on Linux
(media.webrtc.camera.allow-pipewire=true, its default). When the portal's
app-ID registration fails at startup - logged as:
xdg-desktop-portal-kde: Failed to register with host portal
QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID:
Connection already associated with an application ID")

Any subsequent AccessCamera call from Firefox fails immediately. 
Critically, no dialog appears at all: not Firefox's own permission prompt, not
the system camera-consent dialog. getUserMedia() just rejects with
NotAllowedError, reproducible on a trivial page
(mozilla.github.io/webrtc-landing/gum_test.html), with zero indication to the
user that anything failed. 
IsCameraPresent still correctly reports true via gdbus introspect, so the
portal daemon is alive, it's specifically the app-ID registration step that's
broken.

Workaround: setting media.webrtc.camera.allow-pipewire=false in Firefox forces
it back to direct V4L2 access, bypassing the portal entirely, and camera access
works fine.

This confirms the WORKSFORME resolution was premature - the bug affects at
least three independent portal call paths (OpenURI/Ark, and now Camera/Firefox)
across Plasma 6.5-6.7.

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