[mutter] monitor-manager-kms: Improve EDID error reporting

[Jonas Ådahl <jadahl src gnome org>]

commit 5aa02c0378199609f1ee42eb8645108ae06e73a0
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Mar 10 15:12:52 2017 +0800

    monitor-manager-kms: Improve EDID error reporting
    
    Include the connector name in the error message, and only include the
    reason in the GError message.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779837

 src/backends/native/meta-monitor-manager-kms.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/backends/native/meta-monitor-manager-kms.c b/src/backends/native/meta-monitor-manager-kms.c
index bad4fb6..3cedde1 100644
--- a/src/backends/native/meta-monitor-manager-kms.c
+++ b/src/backends/native/meta-monitor-manager-kms.c
@@ -332,7 +332,7 @@ read_edid_blob (MetaMonitorManagerKms *manager_kms,
   if (!edid_blob)
     {
       g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errno),
-                   "Failed to get EDID property blob: %s", strerror (errno));
+                   "%s", strerror (errno));
       return NULL;
     }
 
@@ -907,7 +907,8 @@ init_output (MetaOutput         *output,
       edid = read_output_edid (manager_kms, output, &error);
       if (!edid)
         {
-          g_warning ("Failed to read EDID: %s", error->message);
+          g_warning ("Failed to read EDID blob from %s: %s",
+                     output->name, error->message);
           g_error_free (error);
         }
     }