restore dpms state on drm resume

If there is no current mode, set outputs to dpms off in drm resume.
Sets current mode to null on disable to ensure this can be checked.

2 files changed, 5 insertions, 1 deletions

diff --git a/backend/drm/backend.c b/backend/drm/backend.c
index 47dff227..fec14da9 100644
--- a/backend/drm/backend.c
+++ b/backend/drm/backend.c
@@ -83,6 +83,8 @@ static void session_signal(struct wl_listener *listener, void *data) {
 		wl_list_for_each(conn, &drm->outputs, link){
 			if (conn->output.current_mode) {
 				wlr_output_set_mode(&conn->output, conn->output.current_mode);
+			} else {
+				wlr_drm_connector_enable(&conn->output, false);
 			}
 
 			if (!conn->crtc) {
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index b2863414..d6388597 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -282,7 +282,7 @@ void wlr_drm_connector_start_renderer(struct wlr_drm_connector *conn) {
 	}
 }
 
-static void wlr_drm_connector_enable(struct wlr_output *output, bool enable) {
+void wlr_drm_connector_enable(struct wlr_output *output, bool enable) {
 	struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
 	if (conn->state != WLR_DRM_CONN_CONNECTED) {
 		return;
@@ -296,6 +296,8 @@ static void wlr_drm_connector_enable(struct wlr_output *output, bool enable) {
 
 	if (enable) {
 		wlr_drm_connector_start_renderer(conn);
+	} else {
+		output->current_mode = NULL;
 	}
 
 	wlr_output_update_enabled(&conn->output, enable);