PS2 -> USB magic

From: Nicolas Turro (
Date: Tue Jun 25 2002 - 12:27:20 EST


on my laptop (compaq armada m300), i used to plug an usb mouse,
and it was 'seen' as a ps2 mouse by Xfree, without any usb module loading
(kernel 2.2.18, with custom configure options)

root@polaire# ls -l /dev/mouse /dev/psmouse
lrwxrwxrwx 1 root root 12 Jun 25 15:27 /dev/mouse ->
crw-rw-rw- 1 root sys 10, 1 Jun 25 15:27 /dev/psmouse

and :
Section "InputDevice"
    Identifier "Mouse1"
    Driver "mouse"
    Option "Device" "/dev/mouse"
    Option "Protocol" "PS/2"
    Option "Emulate3Buttons"

In my XF86Config ...
It was kinda magic....

Anyway, i compiled a 2.4.17 kernel (with more or less the same configure
options, but it was a pain for usb), and now the same 'magic' doesn't work....
I must use usbcore, hid, mousedev, uhci modules in order to use my usb

Can someone explain me how it worked in 2.2.18 without those modules,
and is it possible to make the same magic work in 2.4.17 ?

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This archive was generated by hypermail 2b29 : Sun Jun 30 2002 - 22:00:09 EST