kernel upgrade made caused USB mouse not working

[Man-wai Chang]

I upgraded the kernel from 2.4.2 to 2.4.29 using the .config files of 
2.4.2 as a base, the USB could no longer work on XFree86-4.0. Where 
shoudl I start to solve the problem?

(II) Keyboard "keyboard" handled by legacy driver
(II) XINPUT: Adding extended input device "usbmice" (type: MOUSE)
(II) XINPUT: Adding extended input device "mouse" (type: MOUSE)
(EE) xf86OpenSerial: Cannot open device /dev/input/mouse0
         No such device.
(WW) mouse: cannot open input device

relevant lines from XF86Config-4:

Section "InputDevice"
         Driver          "mouse"
         Identifier      "mouse"
         Option          "Protocol"      "IMPS/2"
         Option          "Device"        "/dev/input/mouse0"
         Option "ZAxisMapping"  "4 5"
EndSection

Section "InputDevice"
         Driver          "mouse"
         Identifier      "usbmice"
         Option          "Device" "/dev/input/mice"
         Option          "Protocol" "IMPS/2"
         Option          "ZAxisMapping" "4 5"
EndSection


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