anthony@Zia:~$ xmodmap -pk | grep -i alt
64 0xffe9 (Alt_L) 0xffe7 (Meta_L) 0xffe9 (Alt_L) 0xffe7 (Meta_L)
108 0xffea (Alt_R) 0xffe8 (Meta_R) 0xffea (Alt_R) 0xffe8 (Meta_R)
204 0x0000 (NoSymbol) 0xffe9 (Alt_L) 0x0000 (NoSymbol) 0xffe9 (Alt_L)
anthony@Zia:~$ xmodmap -pk | grep -i super
133 0xffeb (Super_L) 0x0000 (NoSymbol) 0xffeb (Super_L)
134 0xffec (Super_R) 0x0000 (NoSymbol) 0xffec (Super_R)
206 0x0000 (NoSymbol) 0xffeb (Super_L) 0x0000 (NoSymbol) 0xffeb (Super_L)