From f7c5225288b03c7a6f8139a1c02b840c7eddda8d Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Tue, 20 Aug 2013 04:26:23 +0200
Subject: [PATCH] power: Avoid warning with no keyboard backlight

If there's no keyboard backlight interface in gnome-settings-daemon,
hide the slider as well, rather than throw a warning.

https://bugzilla.gnome.org/show_bug.cgi?id=706040
---
 panels/power/cc-power-panel.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/panels/power/cc-power-panel.c b/panels/power/cc-power-panel.c
index 3d23e0b36..f82044a4f 100644
--- a/panels/power/cc-power-panel.c
+++ b/panels/power/cc-power-panel.c
@@ -891,10 +891,16 @@ sync_kbd_brightness (CcPowerPanel *self)
   GtkRange *range;
 
   result = g_dbus_proxy_get_cached_property (self->priv->kbd_proxy, "Brightness");
-
-  /* set the slider */
-  g_variant_get (result, "i", &brightness);
-  visible = brightness >= 0.0;
+  if (result)
+    {
+      /* set the slider */
+      brightness = g_variant_get_uint32 (result);
+      visible = brightness >= 0.0;
+    }
+  else
+    {
+      visible = FALSE;
+    }
 
   gtk_widget_set_visible (self->priv->kbd_brightness_row, visible);