ubuntu-x-swat team mailing list archive

[Anders Kaseorg <andersk@xxxxxxx>]

I just tried version 1.1.2-1ubuntu1 with no extra configuration,
and my comment 18 still applies:

> However, the pointer is still very hard to control, because the 
> speed varies wildly between its minimum and maximum.
>
> Here is some documentation from the Xorg wiki which confirms my 
> suspicion that both the Xorg core and the synaptics driver are 
> independently applying their own acceleration curves.
>
> http://www.x.org/wiki/Development/Documentation/PointerAcceleration#head-ff75ddde3561d3a8bbb53042a6ea94c4c8958a2c
>
> The solution apparently is to set the synaptics MinSpeed and 
> MaxSpeed values to be _equal_, and let Xorg core do all the 
> acceleration itself.

Since then I have been running with a custom /etc/hal/fdi/policy/anders-
synaptics.fdi that sets MaxSpeed == MinSpeed, and I have found the
pointer much easier to control.  Xorg is indeed still accelerating the
pointer, but its acceleration is a lot smoother than the synaptics
driver’s.

-- 
Touchpad movement problems in 0.99.3
https://bugs.launchpad.net/bugs/320639
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