I had a similar problem a couple of months back. At the end, I decided to
buy another mouse (Logitech). In case it is helpful, this is the archival of
the mail thread: http://marc.info/?l=openbsd-misc&m=124864549827787&w=2

Luis

On Fri, Mar 19, 2010 at 2:29 PM, Benoit Chesneau <bchesneau@gmail.com>wrote:

quoted text
> Hi,
>
> To remove wires on my desk i decided to test the micosoft arc mouse
> with openbsd. Seem the system is able to recognize it :
>
> uhidev4 at uhub7 port 2 configuration 1 interface 0 "Microsoft
> Microsoft\M-. 2.4GHz Transceiver v5.0" rev 2.00/1.40 addr 2
> uhidev4: iclass 3/1, 23 report ids
> ums1 at uhidev4 reportid 17: 5 buttons, Z dir
>
>
> But i've no cursor in X11 even if it seems to find it :
>
> (**) Option "Protocol" "wsmouse"
> (**) Mouse0: Protocol: wsmouse
> (**) Option "CorePointer"
> (**) Mouse0: always reports core events
> (**) Option "Device" "/dev/wsmouse"
> (==) Mouse0: Emulate3Buttons, Emulate3Timeout: 50
> (**) Option "ZAxisMapping" "4 5 6 7"
> (**) Mouse0: ZAxisMapping: buttons 4, 5, 6 and 7
> (**) Mouse0: Buttons: 11
> (II) XINPUT: Adding extended input device "Mouse0" (type: MOUSE)
> (**) Mouse0: (accel) keeping acceleration scheme 1
> (**) Mouse0: (accel) filter chain progression: 2.00
> (**) Mouse0: (accel) filter stage 0: 20.00 ms
>
>
> did I missed smth? xorg.conf is here :
>
> http://friendpaste.com/1Rc4j5nDNK3290fQl8PUDy
>
> - benont