ThinkPad T42 w/-current, no mouse in X

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

Recently, I've only been using text console or SSH on my ThinkPad T42
when using -current (via netboot).

I finally got around to starting X on it and was surprised when the mouse
didn't work.  No motion either through the trackpoint nub or the trackpad
and no evidence any buttons work.  The keyboard works fine once you get
a window active (Alt-Tab in fvwm).

It used to work in -current some time back.  Mouse works fine in X under
netbsd-7 and -8.0_RC2.

'dmesg' says the following about the mouse:

[    1.008156] pms0 at pckbc0 (aux slot)
[    1.008156] pms0: Synaptics touchpad version 5.9
[    1.008156] pms0: Passthrough, Palm detect, Multi-finger
[    1.008156] pckbc0: using irq 12 for aux slot
[    1.008156] wsmouse0 at pms0 mux 0

The Xorg.0.log says the following:

[...]
[   131.902] (==) ModulePath set to "/usr/X11R7/lib/modules"
[   131.902] (==) |-->Input Device "<default pointer>"
[   131.902] (==) |-->Input Device "<default keyboard>"
[   131.902] (==) No Layout section. Using the default mouse configuration.
[   131.902] (==) No Layout section. Using the default keyboard configuration.
[...]
[   132.620] (II) LoadModule: "mouse"
[   132.624] (II) Loading /usr/X11R7/lib/modules/drivers/mouse_drv.so
[   132.636] (II) Module mouse: vendor="X.Org Foundation"
[   132.636]    compiled for 1.18.4, module version = 1.9.2
[   132.636]    Module class: X.Org XInput Driver
[   132.636]    ABI class: X.Org XInput driver, version 22.1
[...]
[   144.819] (II) Using input driver 'mouse' for '<default pointer>'
[   144.820] (**) Option "CorePointer" "on"
[   144.820] (**) <default pointer>: always reports core events
[   144.820] (WW) <default pointer>: No Device specified, looking for one...
[   145.258] (II) <default pointer>: found Device "/dev/wsmouse"
[   145.261] (--) <default pointer>: Device: "/dev/wsmouse"
[   145.261] (==) <default pointer>: Protocol: "WSMouse"
[   145.261] (**) <default pointer>: always reports core events
[   145.261] (**) Option "Device" "/dev/wsmouse"
[   145.704] (==) <default pointer>: Emulate3Buttons, Emulate3Timeout: 50
[   145.704] (**) <default pointer>: ZAxisMapping: buttons 4 and 5
[   145.704] (**) <default pointer>: Buttons: 9
[   145.704] (II) XINPUT: Adding extended input device "<default pointer>" (type: MOUSE, id 6)
[   145.704] (**) <default pointer>: (accel) keeping acceleration scheme 1
[   145.704] (**) <default pointer>: (accel) acceleration profile 0
[   145.704] (**) <default pointer>: (accel) acceleration factor: 2.000
[   145.704] (**) <default pointer>: (accel) acceleration threshold: 4

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