From dc9fdd638574c201c13ce971d6d7149ada6eb94a Mon Sep 17 00:00:00 2001
From: Rostislav Pehlivanov <atomnuker@gmail.com>
Date: Wed, 21 Nov 2018 19:23:48 +0000
Subject: [PATCH] Skip interlaced modes during drm mode detection

Fixes #3167
A better solution could be made if there's a need to.
---
 backend/drm/drm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index 9fd5c6a3..eb3a71c0 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -1133,6 +1133,12 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
 					wlr_log_errno(WLR_ERROR, "Allocation failed");
 					continue;
 				}
+
+				if (mode->drm_mode.flags & DRM_MODE_FLAG_INTERLACE) {
+					free(mode);
+					continue;
+				}
+
 				mode->drm_mode = drm_conn->modes[i];
 				mode->wlr_mode.width = mode->drm_mode.hdisplay;
 				mode->wlr_mode.height = mode->drm_mode.vdisplay;