From 9c6e6ea3813666bb31ed4f614d93079be8b84e7e Mon Sep 17 00:00:00 2001
From: Rui Matos <tiagomatos@gmail.com>
Date: Mon, 2 Mar 2015 18:10:44 +0100
Subject: [PATCH] monitor-manager-kms: Fix a crash getting a crtc-less output's
 scale

https://bugzilla.gnome.org/show_bug.cgi?id=745476
---
 src/backends/native/meta-monitor-manager-kms.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backends/native/meta-monitor-manager-kms.c b/src/backends/native/meta-monitor-manager-kms.c
index 836df3b67..950090f52 100644
--- a/src/backends/native/meta-monitor-manager-kms.c
+++ b/src/backends/native/meta-monitor-manager-kms.c
@@ -280,6 +280,9 @@ compute_scale (MetaOutput *output)
 {
   int scale = 1;
 
+  if (!output->crtc)
+    goto out;
+
   /* Scaling makes no sense */
   if (output->crtc->rect.width < HIDPI_MIN_HEIGHT)
     goto out;