1
Verify the likely cause
Install the GNOME xdg-desktop-portal backend, remove conflicting portal backends and restart the user PipeWire and portal services.
FULL AI ANALYSIS
Wayland screen sharing shows a black window in video calls
Generated Sep 5, 2026, 11:54:26 PM
Analysis summary
The reported behaviour is consistent with the desktop portal implementation does not match the active GNOME session. The safest next step is to verify that hypothesis with a reversible test before making permanent configuration changes.
Possible causes
The desktop portal implementation does not match the active GNOME session.
78%A recent software, firmware or configuration change is exposing an existing compatibility issue.
34%Suggested fixes
2
Validate and monitor
Reproduce the issue once after the change, review relevant logs or metrics, and keep a rollback path until the system has remained stable.