From ef64c4f43cda0037e837fe9210891627517705a0 Mon Sep 17 00:00:00 2001 From: Rouven Czerwinski Date: Thu, 30 May 2024 07:23:29 +0200 Subject: [PATCH 1/2] backend/drm: constrain eDP displays to first CRTC At least on intel hardware, only pipe A as the first CRTC is able to handle PSR/FBC to support lower pc10 package states. This is a problem for situations where the internal display is disabled and other monitors are connected, since the match logic will use another CRTC instead of the first one to not enable/disable CRTCs unnecessarily. Constrain internal eDP displays to the first CRTC. --- backend/drm/drm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/backend/drm/drm.c b/backend/drm/drm.c index 07880c47..e176f2ce 100644 --- a/backend/drm/drm.c +++ b/backend/drm/drm.c @@ -1372,6 +1372,11 @@ static struct wlr_drm_connector *create_drm_connector(struct wlr_drm_backend *dr wlr_drm_conn_log(wlr_conn, WLR_ERROR, "No CRTC possible"); } + // Constrain eDP displays to the first crtc + if (drm_conn->connector_type_id == DRM_MODE_CONNECTOR_eDP) { + wlr_conn->possible_crtcs = 1; + } + wlr_conn->crtc = connector_get_current_crtc(wlr_conn, drm_conn); wl_list_insert(drm->connectors.prev, &wlr_conn->link); -- 2.44.1