Linux – Trying to set keyboard layout using Xorg configuration but it’s not working

I'm trying to set my HP Pavilion g6 keyboard layout to English(us) and Arabic(ara).

I'm using Fedora 18, but followed Arch Wiki anyways.

Here's my 90-keyboard-layout.conf file :

Section "InputClass"
        Identifier  "keyboard"
        MatchIsKeyboard "on"
        MatchDevicePath "/dev/input/event*"
        Driver          "evdev"
        Option          "XkbModel"  "pc105"
        Option          "XkbLayout"     "us,ara(qwerty_digits)"
        Option          "XkbVariant"    "qwerty_digits,qwerty_digits"
        Option          "XkbOptions"    "grp:alt_shift_toggle"
EndSection

I've entered pc105 because I have no idea what's the corresponding XkbModel for my HP Pavilion g6 keyboard (looked in /usr/share/X11/xkb/rules/xorg but didn't find it).

I have also this file 00-anaconda-keyboard.conf which contains :

#This file was generated by the Anaconda installer
Section "InputClass"
        Identifier  "keyboard"
        MatchIsKeyboard "on"
        Option          "XkbOptions"    "terminate:ctrl_alt_bksp,"
EndSection

Section "ServerFlags"
        Option  "DontZap" "false"
EndSection

Here's my setxkbmap -print:

xkb_keymap {
    xkb_keycodes  { include "evdev+aliases(qwerty)" };
    xkb_types     { include "complete"  };
    xkb_compat    { include "complete"  };
    xkb_symbols   { include "pc+us(qwerty_digits)+ara(qwerty_digits)(qwerty_digits):2+inet(evdev)+group(alt_shift_toggle)+terminate(ctrl_alt_bksp)" };
    xkb_geometry  { include "pc(pc104)" };
};

What else is missing? Layout switching is not working at all so far.