diff --git a/src/backends/meta-monitor-config-manager.c b/src/backends/meta-monitor-config-manager.c
index a2e83d890..8a8abf5a1 100644
--- a/src/backends/meta-monitor-config-manager.c
+++ b/src/backends/meta-monitor-config-manager.c
@@ -943,7 +943,8 @@ find_logical_config_for_builtin_display_rotation (MetaMonitorConfigManager *conf
 
           monitor_config = logical_monitor_config->monitor_configs->data;
           if (meta_monitor_spec_equals (meta_monitor_get_spec (panel),
-                                        monitor_config->monitor_spec))
+                                        monitor_config->monitor_spec,
+                                        config_manager->monitor_manager->edid_sufficient))
             return logical_monitor_config;
         }
     }
@@ -1432,7 +1433,8 @@ meta_monitors_config_key_equal (gconstpointer data_a,
       MetaMonitorSpec *monitor_spec_a = l_a->data;
       MetaMonitorSpec *monitor_spec_b = l_b->data;
 
-      if (!meta_monitor_spec_equals (monitor_spec_a, monitor_spec_b))
+      if (!meta_monitor_spec_equals (monitor_spec_a, monitor_spec_b,
+                                     config_key_a->edid_sufficient))
         return FALSE;
     }
 
@@ -1497,7 +1499,8 @@ meta_monitors_config_new (MetaMonitorManager           *monitor_manager,
 
       monitor_spec = meta_monitor_get_spec (monitor);
       if (meta_logical_monitor_configs_have_monitor (logical_monitor_configs,
-                                                     monitor_spec))
+                                                     monitor_spec,
+                                                     monitor_manager->edid_sufficient))
         continue;
 
       disabled_monitor_specs =
@@ -1700,7 +1703,8 @@ has_adjacent_neighbour (MetaMonitorsConfig       *config,
 
 gboolean
 meta_logical_monitor_configs_have_monitor (GList           *logical_monitor_configs,
-                                           MetaMonitorSpec *monitor_spec)
+                                           MetaMonitorSpec *monitor_spec,
+                                           gboolean         edid_sufficient)
 {
   GList *l;
 
@@ -1714,7 +1718,8 @@ meta_logical_monitor_configs_have_monitor (GList           *logical_monitor_conf
           MetaMonitorConfig *monitor_config = k->data;
 
           if (meta_monitor_spec_equals (monitor_spec,
-                                        monitor_config->monitor_spec))
+                                        monitor_config->monitor_spec,
+                                        edid_sufficient))
             return TRUE;
         }
     }
@@ -1727,7 +1732,8 @@ meta_monitors_config_is_monitor_enabled (MetaMonitorsConfig *config,
                                          MetaMonitorSpec    *monitor_spec)
 {
   return meta_logical_monitor_configs_have_monitor (config->logical_monitor_configs,
-                                                    monitor_spec);
+                                                    monitor_spec,
+                                                    config->key->edid_sufficient);
 }
 
 gboolean
diff --git a/src/backends/meta-monitor-config-manager.h b/src/backends/meta-monitor-config-manager.h
index 207cec473..ee743e5c1 100644
--- a/src/backends/meta-monitor-config-manager.h
+++ b/src/backends/meta-monitor-config-manager.h
@@ -178,7 +178,8 @@ MetaMonitorsConfigKey * meta_create_monitors_config_key_for_current_state (MetaM
 
 META_EXPORT_TEST
 gboolean meta_logical_monitor_configs_have_monitor (GList           *logical_monitor_configs,
-                                                    MetaMonitorSpec *monitor_spec);
+                                                    MetaMonitorSpec *monitor_spec,
+                                                    gboolean         edid_sufficient);
 
 META_EXPORT_TEST
 gboolean meta_verify_monitor_mode_spec (MetaMonitorModeSpec *monitor_mode_spec,
diff --git a/src/backends/meta-monitor-manager.c b/src/backends/meta-monitor-manager.c
index b0e1c449c..19cdee592 100644
--- a/src/backends/meta-monitor-manager.c
+++ b/src/backends/meta-monitor-manager.c
@@ -2475,7 +2475,8 @@ meta_monitor_manager_get_monitor_from_spec (MetaMonitorManager *manager,
       MetaMonitor *monitor = l->data;
 
       if (meta_monitor_spec_equals (meta_monitor_get_spec (monitor),
-                                    monitor_spec))
+                                    monitor_spec,
+                                    manager->edid_sufficient))
         return monitor;
     }
 
diff --git a/src/backends/meta-monitor.c b/src/backends/meta-monitor.c
index 5d163e1a8..ae405aa29 100644
--- a/src/backends/meta-monitor.c
+++ b/src/backends/meta-monitor.c
@@ -126,12 +126,13 @@ meta_monitor_spec_clone (MetaMonitorSpec *monitor_spec)
 
 gboolean
 meta_monitor_spec_equals (MetaMonitorSpec *monitor_spec,
-                          MetaMonitorSpec *other_monitor_spec)
+                          MetaMonitorSpec *other_monitor_spec,
+                          gboolean         edid_only)
 {
-  return (g_str_equal (monitor_spec->connector, other_monitor_spec->connector) &&
-          g_str_equal (monitor_spec->vendor, other_monitor_spec->vendor) &&
+  return (g_str_equal (monitor_spec->vendor, other_monitor_spec->vendor) &&
           g_str_equal (monitor_spec->product, other_monitor_spec->product) &&
-          g_str_equal (monitor_spec->serial, other_monitor_spec->serial));
+          g_str_equal (monitor_spec->serial, other_monitor_spec->serial) &&
+          (edid_only || g_str_equal (monitor_spec->connector, other_monitor_spec->connector)));
 }
 
 int
diff --git a/src/backends/meta-monitor.h b/src/backends/meta-monitor.h
index 58d2950c9..60472dd97 100644
--- a/src/backends/meta-monitor.h
+++ b/src/backends/meta-monitor.h
@@ -272,7 +272,8 @@ MetaMonitorSpec * meta_monitor_spec_clone (MetaMonitorSpec *monitor_id);
 
 META_EXPORT_TEST
 gboolean meta_monitor_spec_equals (MetaMonitorSpec *monitor_id,
-                                   MetaMonitorSpec *other_monitor_id);
+                                   MetaMonitorSpec *other_monitor_id,
+                                   gboolean         edid_only);
 
 META_EXPORT_TEST
 int meta_monitor_spec_compare (MetaMonitorSpec *monitor_spec_a,