我使用该文件~/.Xmodmap
keycode 110 = Prior NoSymbol Prior
keycode 112 = Home NoSymbol Home
keycode 115 = Next NoSymbol Next
keycode 117 = End NoSymbol End
keycode 151 = Control_L NoSymbol Control_L
keycode 37 = XF86WakeUp NoSymbol XF86WakeUp
可以切换 Home 键与上翻页键、End 键与下翻页键。现在，我将外部键盘插入笔记本电脑，但根本无法进行切换。我缺少什么？