Mouse resolution detected incorrectly?

[kupopo]

Hi,

I just installed Jaunty on my Dell Inspiron 6000 laptop and noticed that the mouse cursor doesn't always move in single-pixel increments. I vaguely remember seeing something about resolution in the kernel configuration many years ago, but I can't seem to find it now. In any case, my screen is at 1680x1050, and here's what shows up in my Xorg.0.log when it gets around to setting up the touchpad:

(II) config/hal: Adding input device AlpsPS/2 ALPS GlidePoint
(II) Synaptics touchpad driver version 0.99.3
(**) Option "Device" "/dev/input/event8"
(II) AlpsPS/2 ALPS GlidePoint: x-axis range 0 - 1023
(II) AlpsPS/2 ALPS GlidePoint: y-axis range 0 - 767
(II) AlpsPS/2 ALPS GlidePoint: pressure range 0 - 127
(II) AlpsPS/2 ALPS GlidePoint: finger width range 0 - 0
(II) AlpsPS/2 ALPS GlidePoint: buttons: left right middle
(II) ALPS touchpad detected: AlpsPS/2 ALPS GlidePoint. Applying customised settings...
(--) AlpsPS/2 ALPS GlidePoint touchpad found
(**) AlpsPS/2 ALPS GlidePoint: always reports core events
(II) XINPUT: Adding extended input device "AlpsPS/2 ALPS GlidePoint" (type: TOUCHPAD)
(**) AlpsPS/2 ALPS GlidePoint: (accel) keeping acceleration scheme 1
(**) AlpsPS/2 ALPS GlidePoint: (accel) filter chain progression: 2.00
(**) AlpsPS/2 ALPS GlidePoint: (accel) filter stage 0: 20.00 ms
(**) AlpsPS/2 ALPS GlidePoint: (accel) set acceleration profile 0
(WW) AlpsPS/2 ALPS GlidePoint can't grab event device, errno=16
(--) AlpsPS/2 ALPS GlidePoint touchpad found

It seems like the x-range and y-range are off, perhaps? Or maybe there's scaling that happens somewhere else? I tried changing the *Edge options in my xorg.conf file, but found that any random settings I came up with (such as Left=0, Right=1679, Top=0, Bottom=1049) caused the edge scrolling features to break. Here is my rather substantial InputDevice section (mostly copied from my previous Hardy installation, which is unfortuntely broken so I can't go back to see if it had a similar issue):

Section "InputDevice"
    Identifier   "Alps Touchpad"
    Driver     "synaptics"
    Option     "SendCoreEvents"    "true"
    Option     "Device"    "/dev/psaux"
    Option     "Protocol"   "auto-dev"
    Option     "LeftEdge"   "120"
    Option     "RightEdge"   "900"
    Option     "TopEdge"    "120"
    Option     "BottomEdge"  "650"
    Option     "FingerLow"   "14"
    Option     "FingerHigh"  "15"
    Option     "MaxTapTime"  "100"
    Option     "ClickTime"   "0"
    Option     "TapTime"    "60"
    Option     "EmulateMidButtonTime" "75"
    Option     "VertScrollDelta"    "10"
    Option     "HorizEdgeScroll"    "1"
    Option     "HorizScrollDelta"   "10"
    Option     "MinSpeed"   "0.75"
    Option     "MaxSpeed"   "1.35"
    Option     "AccelFactor"  "0.020"
    Option     "EdgeMotionMinSpeed"  "300"
    Option     "EdgeMotionMaxSpeed"  "500"
    Option     "UpDownScrolling"    "10"
    Option     "CircularScrolling"   "0"
    Option     "CircScrollDelta"    "0.1"
    Option     "CircScrollTrigger"   "2"
    Option     "CoastingSpeed" "1"
    Option     "SHMConfig"   "true"
EndSection

If it were just a little bit choppier mouse motion, I could ignore this, but I have a hypothesis that it's broken my active desktop borders as well, so I'm really anxious to get this fixed... does anyone have any suggestions that might help?

Thanks!
steve