Created attachment 130611 [details]
My dmesg dump

Toshiba Kirabook has a wrong special keys table at toshiba_acpi module. I have a suggest to a correct table bellow:

#toshiba_acpi.c line 153 - from linux-source 3.11.0

static const struct key_entry toshiba_acpi_keymap[] = {
        { KE_KEY, 0x158, { KEY_RFKILL } },
        { KE_KEY, 0x101, { KEY_MUTE } },
        { KE_KEY, 0x102, { KEY_ZOOMOUT } },
        { KE_KEY, 0x103, { KEY_ZOOMIN } },
        { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
        { KE_KEY, 0x139, { KEY_ZOOMRESET } },
        { KE_KEY, 0x13b, { KEY_COFFEE } },
        { KE_KEY, 0x13c, { KEY_BATTERY } },
        { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
        { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
        { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
        { KE_KEY, 0x142, { KEY_WLAN } },
        { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
        { KE_KEY, 0x17f, { KEY_FN } },
        { KE_KEY, 0xb05, { KEY_PROG2 } },
        { KE_KEY, 0xb06, { KEY_WWW } },
        { KE_KEY, 0xb07, { KEY_MAIL } },
        { KE_KEY, 0xb30, { KEY_STOP } },
        { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
        { KE_KEY, 0xb32, { KEY_NEXTSONG } },
        { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
        { KE_KEY, 0xb5a, { KEY_MEDIA } },
        { KE_IGNORE, 0x1430, { KEY_RESERVED } },
        { KE_END, 0 },
};