--- /dev/null
+diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
+index d8d7596..a1b7117 100644
+--- a/drivers/acpi/video.c
++++ b/drivers/acpi/video.c
+@@ -71,7 +71,7 @@ MODULE_AUTHOR("Bruno Ducrot");
+ MODULE_DESCRIPTION("ACPI Video Driver");
+ MODULE_LICENSE("GPL");
+
+-static int brightness_switch_enabled = 1;
++static int brightness_switch_enabled = 0;
+ module_param(brightness_switch_enabled, bool, 0644);
+
+ static int acpi_video_bus_add(struct acpi_device *device);