Hello, on CONTROL_USB_AUTOSUSPEND=1, laptop_mode just enables autosuspend for all USB devices. Now since linux 2.6.30, this also works on HID devices, which is quite undesirable in most cases. So I guess there should be some checking if a device is an input device or not. See also: http://bugzilla.kernel.org/show_bug.cgi?id=13624