moused linear acceleration drops
olli at lurza.secnetix.de
Fri Jun 15 08:35:23 UTC 2007
Harald Schmalzbauer wrote:
> Oliver Fromme wrote:
> > Harald Schmalzbauer wrote:
> > > But the linear ac(de)celeration seems to 'drop' moving information.
> > > I have a 1600dpi mouse which is far to quick by default.
> > > When I use 'xset m 1/3' the speed is fine and also every smallest
> > > movement gets recognized.
> > > When I use '-a 0.33' with moused (besides -A 1.6/2 with xset m 1) small
> > > (and slow) movement's are not reported. I have to move at some minimal
> > > speed to get the cursor moving.
> > > So it seems that info gets droped.
> > It's probably a rounding problem. I'll have a look at it.
> > My mice and trackballs aren't that sensitive, so I didn't
> > notice such a problem.
> > I assume that there's no such problem if you don't use the
> > new -A option, right? (i.e. no regression, I hope.)
> Hmm, if I don't use -A (dynamic acc) the problem still persists, the linear
> acceleration is droping info, hence the culprit. I don't have a problem with
> dynamic acceleration when the linear is disabled, so it can't be a regression
> by your patch I think.
My patch only added -A (dynamic acc) but did not touch the
algorithm of -a (linear acc). If you observe the problem
when using -a but not -A, then there are two possibilities:
1. My patch _did_ introduce a regression with -a, or:
2. The problem already existed before my patch.
I'll try to find out and fix it. (My free time is limited
today, though, so it might take a little longer.)
By the way, what kind or model of a mouse do you have
there? Maybe I'm able to get hold of one, so I can
reproduce the problem more easily. The most sensitive
mouse in my collection seems to have only 600 dpi.
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
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