ubuntu-x-swat team mailing list archive

[Edward <edward.coffey@xxxxxxxxx>]

I'm not sure how this functionality used to work, but this doesn't seem
like a bug to me. Acceleration doesn't affect the base speed of the
pointer when you're moving the mouse slowly, only when you move it
faster. So acceleration less than 1 is saying "when I move my mouse
faster, make the pointer move slower relative to my hand speed" which
doesn't ever seem desirable.

To change the base speed of the pointer relative to hand speed you need
to look at the ConstantDeceleration option. In modern systems it's set
in an FDI file, typically /etc/hal/fdi/policy/10-x11-input.fdi (which
doesn't exist by default in Ubuntu 9.04). I've attached a basic version
- so far I haven't worked out how to get it to take effect without a
reboot. I've used USB IDs to identify the mouse, since this is an option
I regard as specific to a given piece of hardware - a different mouse
might need different settings. Obviously you'll need to update it with
your own USB IDs.

** Attachment added: "10-x11-input.fdi"
   http://launchpadlibrarian.net/28128795/10-x11-input.fdi

-- 
mouse acceleration values smaller than "1" have no effect in Jaunty
https://bugs.launchpad.net/bugs/367808
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