From 0c962c98cc3bc4e1acd3adf83bd527e278b5597b Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Mon, 17 Oct 2022 13:21:19 +0200
Subject: [PATCH] backend/drm: log when restoring mode after VT switch fails

Can make it easier to track down issues.
---
 backend/drm/backend.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/backend/drm/backend.c b/backend/drm/backend.c
index 46f7f7b8..cee39c9a 100644
--- a/backend/drm/backend.c
+++ b/backend/drm/backend.c
@@ -120,7 +120,9 @@ static void handle_session_active(struct wl_listener *listener, void *data) {
 				.mode_type = WLR_OUTPUT_STATE_MODE_FIXED,
 				.mode = mode,
 			};
-			drm_connector_commit_state(conn, &state);
+			if (!drm_connector_commit_state(conn, &state)) {
+				wlr_drm_conn_log(conn, WLR_ERROR, "Failed to restore state after VT switch");
+			}
 		}
 	} else {
 		wlr_log(WLR_INFO, "DRM fd paused");