我在使用模块的 Asus G53SW-XR1（2.6.39-2 内核）中启用键盘背光时遇到问题：
$ lsmod | grep asus
asus_nb_wmi 12393 0
asus_wmi 18488 1 asus_nb_wmi
sparse_keymap 12760 1 asus_wmi
pci_hotplug 30807 1 asus_wmi
wmi 13202 1 asus_wmi
rfkill 19014 5 asus_wmi,bluetooth,cfg80211
打开笔记本电脑后（甚至在 grub 之前），灯会亮起，但随后就会熄灭。当我按下按钮时，我会收到日志消息：
Nov 18 16:14:36 grendl kernel: [ 383.513969] keyboard: can't emulate rawmode for keycode 240
Nov 18 16:14:36 grendl kernel: [ 383.513992] keyboard: can't emulate rawmode for keycode 240
Nov 18 16:14:36 grendl kernel: [ 383.514002] asus_wmi: Unknown key b7 pressed