Thanks a lot for your response...
I have a "Logitech Formula Force EX
" (not G25), and it seems to be recognized by my kernel (18.104.22.168-134.fc10.x86_64).
Moreover, I can't find the file : /usr/src/linux/drivers/hid/hid-ff.c
(Even if I run the command : find / -name hid-ff.* -print)
So do I really have to recompile my kernel ?
The usbtool works : when I use it, the /dev/js0 disappear.
But I can't make it appear again, even if I use the modprobe usbhid :
# rmmod usbhid
ERROR: Module usbhid does not exist in /proc/modules
# modprobe usbhid
FATAL: Module usbhid not found.
I don't know how to create the usbhid module. Do you ?
After that, I have to use modprobe joydev, and unplug/plug my USB wire to make the /dev/js0 appear again, and to be abble to use it.
I will continue to search alone my problem, but if you have some responses, feel free to help me