https://bugs.kde.org/show_bug.cgi?id=521646

            Bug ID: 521646
           Summary: Firefox not able to see built-in camera anymore
    Classification: Plasma
           Product: xdg-desktop-portal-kde
      Version First 6.7.0
       Reported In:
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected]
  Target Milestone: ---

DESCRIPTION
I thought this was a regression in Firefox (see
https://bugzilla.mozilla.org/show_bug.cgi?id=2048619) but now I think this
might be an issue with xdg-desktop-portal-kde. Not 100% how to confirm this or
help debug, so please guide me here.

The main issue is that Firefox does not seem to see the built-in webcam
anymore. Chromium using xdg-desktop-portal-gtk works just fine. And firefox
with media.webrtc.camera.allow-pipewire set to False also works fine, bypassing
the xdg-portal.


STEPS TO REPRODUCE
1. Open Firefox and set media.webrtc.camera.allow-pipewire to True in
about:config
2. Start, for example, a room in https://meet.kde.org

OBSERVED RESULT
Firefox does ask for permission to use the microphone. It never asks for the
webcam. In the video settings the webcam is not shown.

EXPECTED RESULT
Firefox can use the webcam asking for permissions through the
xdg-desktop-portal-kde as in the past.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.7.0
KDE Frameworks Version: 6.27.0
Qt Version: 6.11.1
Kernel Version: 7.0.12-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 22 × Intel® Core™ Ultra 7 155H
Memory: 32 GiB of RAM (30.9 GiB usable)
Graphics Processor: Intel® Arc
Manufacturer: LENOVO
Product Name: 21KDS00600
System Version: ThinkPad X1 Carbon Gen 12

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