diff -urN a/src/xfpm-backlight-helper.c b/src/xfpm-backlight-helper.c
--- a/src/xfpm-backlight-helper.c
+++ b/src/xfpm-backlight-helper.c
@@ -384,6 +384,7 @@
 	/* available kernel interfaces in priority order */
 	static const gchar *backlight_interfaces[] = {
 		"nv_backlight",
+		"radeon_bl0",
 		"asus_laptop",
 		"toshiba",
 		"eeepc",