[Voyage-linux] Xorg not use my xorg.conf file in /etc/X11 !!

[(spam-protected)]

Hello all,

I installed Voyage on a Alix 3d3.
I installed also MatchBox as window manager.

I am able to run Xterm when launching X with startx. (I put the right 
command in xinitrc for that).

Now I try to configure my keyboard ans my screen resolution by setting 
a xorg.conf file (in etc/X11)
but its not working.
When I look to the log (/var/log/Xorg.0.log who are mount in RAM); I 
saw:

...
(==) Log file: "/var/log/Xorg.0.log", Time: Sun Sep 25 13:45:15 2011
(==) Using config file: "/etc/X11/xorg.conf"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(==) No Layout section.  Using the first Screen section.
...

So it use the conf file in /etc/X11 ..
but more far:

...
(II) Power Button: Configuring as keyboard
(II) XINPUT: Adding extended input device "Power Button" (type: 
KEYBOARD)
(**) Option "xkb_rules" "evdev"
(**) Option "xkb_model" "pc105"
(**) Option "xkb_layout" "us"
(II) config/udev: Adding input device USB Optical Mouse 
(/dev/input/event2)
...

but this is not the input device section that I put in Xorg.conf....(I 
put a 'fr' layout)
and my keyborad stay as querty..

Do you have an idea ??

Thanks

PS: I made a find command to search if there are other xorg.conf file 
somewhere...but not