mouse will only works in one direction with X+gpm

[Micha Feigin <michf@post.tau.ac.il>]

I configured my logitec usb optical wheel mouse (a lot of words for the
standard one ;-) to repeat to X using the raw protocol. The problem is
that under X the mouse only works when scrolling down and not when
scrolling up.
When configured to use /dev/input/mice directly everything works fine,
so it doesn't seem to be the mouse (it also works under M$)
I do need the gpm piping though as my computer is a laptop and thus the
mouse isn't always connected and otherwise I would have to restart X to
use it.

/etc/gpm.conf:

device=/dev/input/mice
responsiveness=
repeat_type=raw
type=autops2
append=""
sample_rate=

The X setup for this mouse:

Section "InputDevice"
        Identifier      "Generic Mouse"
        Driver          "mouse"
        Option          "SendCoreEvents"        "true"
        Option          "Device"                "/dev/gpmdata"
        Option          "Protocol"              "ImPS/2"
        Option          "Emulate3Buttons"       "true"
        Option          "ZAxisMapping"          "4 5"
EndSection