Pointer Acceleration

Gene Heskett gene.heskett at verizon.net
Sat Dec 19 13:47:02 PST 2009

On Saturday 19 December 2009, Simon Thum wrote:
>Justin Piszcz wrote:
>> On Fri, 18 Dec 2009, Lorenz Ruhmann wrote:
>>> Is there a way to exactly reproduce this old behavior with the new code?
>>> I don't like to rely on a scheme that is kinda considered obsolete.
>> Yes, this is VERY annoying to me as well (all of the new acceleration
>> methods except the old one):
>You're free to choose your annoyances. However, as the OP already found
>out, scaling down is an important use case and when it doesn't work well
>that's a bug. Reporting it generally gets better results than piling up
>grudges. Your mileage may vary.
>> Add this to your:
>> /etc/hal/fdi/policy/10-x11-input.fdi
>> $ cat 10-x11-input.fdi
>> <match key="info.capabilities" contains="input.mouse">
>>     <merge key="input.x11_options.AccelerationScheme"
>> type="string">lightweight</merge> </match>
>Obviously the OP knew how to switch back. I suppose he read the
>documentation. BTW it's not obsolete, it's just broken for anything but
>linear scaling (or none).
I would tend to agree.  With modern high resolution mice, I have often wished 
I could set the gain to a below 1 condition.  My mouse now uses about a 1" 
x1.35" area of the pad, to cover a 1680x1250 screen, so its way too fast for 
this user.

Cheers, Gene
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