This will map out some of the missing keycodes to something the kernel can use, this should
be put in a startup file. (ie: rc.local)

setkeycodes e011 145
setkeycodes e012 146
setkeycodes e013 147
setkeycodes e014 148
setkeycodes e016 151
setkeycodes e066 218
setkeycodes bb 200
setkeycodes bc 201
setkeycodes bd 202
setkeycodes be 203
setkeycodes bf 204
setkeycodes c0 205
setkeycodes c1 206
setkeycodes c2 207
setkeycodes c3 208
setkeycodes c4 209
setkeycodes d7 210
setkeycodes d8 211

/etc/X11/xkb/symbols/inet

Add this blurb to the file: 

partial alphanumeric_keys
xkb_symbols "logielite" {
    name[Group1]= "Logitech Elite";

    // Media keys
    key <I20>   {       [ XF86AudioMute         ]       };
    key <I6D>   {       [ XF86AudioMedia        ]       };
    key <I2E>   {       [ XF86AudioLowerVolume  ]       };
    key <I30>   {       [ XF86AudioRaiseVolume  ]       };
    key <I22>   {       [ XF86AudioPlay, XF86AudioPause ] };
    key <I24>   {       [ XF86AudioStop         ]       };
    key <I10>   {       [ XF86AudioPrev         ]       };
    key <I19>   {       [ XF86AudioNext         ]       };

    // Left side
    key <I69>   {       [ XF86Go                ]       };
    key <I6A>   {       [ XF86Back              ]       };
    key <I61>   {       [ XF86UserPB            ]       };
    key <I6C>   {       [ XF86Mail              ]       };
    key <K68>   {       [ XF86Messenger         ]       };
    key <K69>   {       [ XF86WebCam            ]       };
    key <K6A>   {       [ XF86ScrollClick       ]       };

    // Right side
    key <I13>   {       [ XF86iTouch            ]       };
    key <I42>   {       [ XF86Favorites         ]       };
    key <I1F>   {       [ XF86Shop              ]       };
    key <I66>   {       [ XF86Search            ]       };
    key <I32>   {       [ XF86HomePage          ]       };

    // Extended function keys
    key <I28>   {       [ XF86New               ]       }; // F1
    key <I29>   {       [ XF86Reply             ]       }; // F2
    key <I2B>   {       [ XF86MailForward       ]       }; // F3
    key <I2C>   {       [ XF86Send              ]       }; // F4
    key <I2D>   {       [ Undo                  ]       }; // F5
    key <K59>   {       [ Redo                  ]       }; // F6
    key <I2F>   {       [ Print                 ]       }; // F7
    key <I33>   {       [ XF86Save              ]       }; // F8
    key <I34>   {       [ XF86MyComputer        ]       }; // F9
    key <I39>   {       [ XF86Documents         ]       }; // F10
    key <I3A>   {       [ XF86Pictures          ]       }; // F11
    key <I3B>   {       [ XF86Music             ]       }; // F12

};

/etc/X11/xkb/rules/xfree86

Add logielite in the $inetkbds list