@@ xev output when pressing Fn-mute, volume up, and volume down

KeyPress event, serial 32, synthetic NO, window 0x1a00001,
    root 0x5e, subw 0x0, time 1438555, (372,107), root:(398,401),
    state 0x0, keycode 121 (keysym 0x1008ff12, XF86AudioMute), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 35, synthetic NO, window 0x1a00001,
    root 0x5e, subw 0x0, time 1438660, (372,107), root:(398,401),
    state 0x0, keycode 121 (keysym 0x1008ff12, XF86AudioMute), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 35, synthetic NO, window 0x1a00001,
    root 0x5e, subw 0x0, time 1439752, (372,107), root:(398,401),
    state 0x0, keycode 122 (keysym 0x1008ff11, XF86AudioLowerVolume), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 35, synthetic NO, window 0x1a00001,
    root 0x5e, subw 0x0, time 1439851, (372,107), root:(398,401),
    state 0x0, keycode 122 (keysym 0x1008ff11, XF86AudioLowerVolume), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyPress event, serial 35, synthetic NO, window 0x1a00001,
    root 0x5e, subw 0x0, time 1440521, (372,107), root:(398,401),
    state 0x0, keycode 123 (keysym 0x1008ff13, XF86AudioRaiseVolume), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 35, synthetic NO, window 0x1a00001,
    root 0x5e, subw 0x0, time 1440603, (372,107), root:(398,401),
    state 0x0, keycode 123 (keysym 0x1008ff13, XF86AudioRaiseVolume), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False