zed-industries/zed · error

Failed to initialize XDP event source: {err:?}

Error message

Failed to initialize XDP event source: {err:?}

What it means

Raised in X11Client::new: calloop failed to register the xdg-desktop-portal event source (appearance changes, button layout) with the event loop. {err:?} is the calloop InsertError; the client would otherwise miss theme and decoration updates.

Source

Thrown at crates/gpui_linux/src/linux/x11/client.rs:526

                        for window in client.0.borrow_mut().windows.values_mut() {
                            window.window.set_appearance(appearance);
                        }
                    }
                    XDPEvent::ButtonLayout(layout_str) => {
                        let layout = WindowButtonLayout::parse(&layout_str)
                            .log_err()
                            .unwrap_or_else(WindowButtonLayout::linux_default);
                        client.with_common(|common| common.button_layout = layout);
                        for window in client.0.borrow_mut().windows.values_mut() {
                            window.window.set_button_layout();
                        }
                    }
                    XDPEvent::CursorTheme(_) | XDPEvent::CursorSize(_) => {
                        // noop, X11 manages this for us.
                    }
                }
            })
            .map_err(|err| anyhow!("Failed to initialize XDP event source: {err:?}"))?;

        xcb_flush(&xcb_connection);

        Ok(X11Client(Rc::new(RefCell::new(X11ClientState {
            modifiers: Modifiers::default(),
            capslock: Capslock::default(),
            last_modifiers_changed_event: Modifiers::default(),
            last_capslock_changed_event: Capslock::default(),
            event_loop: Some(event_loop),
            loop_handle: handle,
            common,
            last_click: Instant::now(),
            last_mouse_button: None,
            last_location: Point::new(px(0.0), px(0.0)),
            current_count: 0,
            pinch_scale: 1.0,
            gpu_context: Rc::new(RefCell::new(None)),
            compositor_gpu,

View on GitHub (pinned to 9d272b0363)

Solutions

1. Inspect the InsertError from inserting the XDP channel source
2. Ensure the XDP event channel is created once and its receiver not moved or dropped before registration
3. Consider making XDP optional: log and continue without desktop-portal integration if registration fails

When it happens

Trigger: Thrown at crates/gpui_linux/src/linux/x11/client.rs:511 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@9d272b0363 (2026-08-20). Data as JSON: /api/errors/f00c631017c58b3d. Report an issue: GitHub.