HP Compaq nw8240 notebook has some special keys that are not covered by 
existing keyboard models. For some keys, there are no matching keysyms (as 
described in bug 3884), therefore I have used generic XF86Launch0/1/2 symbols. 
 
I have modified existing "armada" model for testing purpose as following: 
 
// Laptop/notebook Compaq (eg. Armada, Evo) Laptop Keyboard 
partial alphanumeric_keys 
xkb_symbols "armada" { 
    key <I20>   {       [ XF86AudioMute         ]       }; 
    key <I2E>   {       [ XF86AudioLowerVolume  ]       }; 
    key <I30>   {       [ XF86AudioRaiseVolume  ]       }; 
    key <I75>   {       [ XF86Launch0           ]       }; // Info Center 
    key <I1F>   {       [ XF86Launch1           ]       }; // Presentation Mode 
    key <I5F>   {       [ XF86Standby           ]       }; 
    key <I59>   {       [ XF86Launch2           ]       }; // Battery Monitor 
}; 
 
It looks like that other HP Compaq models (series ncXXXX, nxXXXX and nwXXXX) 
have same (or similar) keys, therefore it would probably make sense to add 
completely new model for all (most) of these notebooks ("Laptop/notebook HP 
Compaq (nc, nx, nw)").  
 
Please let me know in which direction should I develop a patch and if you think 
we should wait for proper keysyms to be added first (see bug 3884).