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Fix error when reconnecting external display
Reconnecting an external display fails on initial page-flip. This occurs when the pageflip_pending flag has been set on the connector at the time the monitor is removed. Once the connector's CRTC has been deallocated, page_flip_handler cannot find the connector by its crtc_id, so pageflip_pending will remain set. This causes initialization to fail when the monitor is reconnected with the error messages: Skipping pageflip on output 'X' Failed to initialize renderer on connector 'X': initial page-flip failed To fix this problem, clear the pageflip_pending flag when cleaning up the connector.
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@ -1677,6 +1677,7 @@ static void drm_connector_cleanup(struct wlr_drm_connector *conn) {
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dealloc_crtc(conn);
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conn->possible_crtc = 0;
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conn->desired_mode = NULL;
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conn->pageflip_pending = false;
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wlr_signal_emit_safe(&conn->output.events.destroy, &conn->output);
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break;
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case WLR_DRM_CONN_DISCONNECTED:
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