Xorg 日文键盘，打不出下划线

修改配置文件: /etc/X11/xorg.conf

修改前:
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "jp106"
Option "XkbVariant" ""
EndSection

修改后:
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "jp106"
Option "XkbLayout" "jp"
Option "XkbVariant" ""
EndSection