diff --git a/src/backends/native/meta-onscreen-native.c b/src/backends/native/meta-onscreen-native.c
index 06f0cb427..934ea630c 100644
--- a/src/backends/native/meta-onscreen-native.c
+++ b/src/backends/native/meta-onscreen-native.c
@@ -1240,6 +1240,7 @@ meta_onscreen_native_is_buffer_scanout_compatible (CoglOnscreen  *onscreen,
   MetaCrtcKms *crtc_kms = META_CRTC_KMS (crtc);
   MetaGpuKms *gpu_kms;
   MetaKmsDevice *kms_device;
+  MetaKmsCrtc *kms_crtc;
   MetaKms *kms;
   MetaKmsUpdate *test_update;
   g_autoptr (MetaKmsFeedback) kms_feedback = NULL;
@@ -1247,10 +1248,17 @@ meta_onscreen_native_is_buffer_scanout_compatible (CoglOnscreen  *onscreen,
 
   gpu_kms = META_GPU_KMS (meta_crtc_get_gpu (crtc));
   kms_device = meta_gpu_kms_get_kms_device (gpu_kms);
+  kms_crtc = meta_crtc_kms_get_kms_crtc (crtc_kms);
   kms = meta_kms_device_get_kms (kms_device);
-  test_update = meta_kms_update_new (kms_device);
 
+  test_update = meta_kms_update_new (kms_device);
   meta_crtc_kms_assign_primary_plane (crtc_kms, fb, test_update);
+
+  meta_topic (META_DEBUG_KMS,
+              "Posting direct scanout test update for CRTC %u (%s) synchronously",
+              meta_kms_crtc_get_id (kms_crtc),
+              meta_kms_device_get_path (kms_device));
+
   kms_feedback = meta_kms_post_test_update_sync (kms, test_update);
   meta_kms_update_free (test_update);