When I press backlight keys then normally OSD is shown and backlight follows immediately the keystrokes step by step. Now in v3.20 it behaves different: When I press backlight keys at first nothing happens. If I watch a video it is being stopped. After some seconds OSD is shown, backlight changes - in one step - to the new level and video continues. Thanks, Jörg -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html