I searxed more about mute key and X200.
I tried several variants of the grub modification above.
But I have no luck, it doesn't work for me.
What I don't understand though is that "keycode 121 = XF86AudioMute NoSymbol
XF86AudioMute"
It means that the mute command is assigned to the key associated with keycode
121?
if I remove it from xmodmap, will it be recognized by xev?
Anyway, it seems it's more directly related to the X200.
I've read a solution about kernel update, but I shouldn't need that since the
mute button worked in a full trisquel install.
