--- drivers/gpu/drm/drm_crtc_helper.c

+++ drivers/gpu/drm/drm_crtc_helper.c

@@ -104,6 +104,7 @@ int drm_helper_probe_single_connector_mo

if (connector->status == connector_status_disconnected) {

DRM_DEBUG_KMS("%s is disconnected\n",

drm_get_connector_name(connector));

+ drm_mode_connector_update_edid_property(connector, NULL);

goto prune;

}