Touchpad accel, spirals and xset
walter.bender at gmail.com
Tue Jan 19 10:49:34 EST 2010
On Tue, Jan 19, 2010 at 10:39 AM, Paul Fox <pgf at laptop.org> wrote:
> martin wrote:
> > On Mon, Jan 18, 2010 at 8:47 PM, Paul Fox <pgf at laptop.org> wrote:
> > > > According to the man page the 2nd parameter is the threshold at which
> > > > the acceleration value is applied so I'm not surprised that you don't
> > > > see any difference between 0 and 1. Even 4 might be hard to see. I
> > > > think that to see a difference for fine motor this value will have be in
> > > > the 5 to 10 range.
> > Right -- I did apply Paul's recommendations. The manpage isn't
> > necesarily going to know all the interactions between our TP, kernel
> > driver and xorg input driver. Experimentation and source review carry
> > more weight.
> > I assume Paul did both -- he's been looking at this for a while.
> > Now, in my experimentation with the values he supplied, it did not
> > make any difference.
> > > martin isn't seeing a difference, which surprises me, because i
> > > definitely saw a difference between 0 and 1. from the wiki page
> > Ok. Gentlemen, maybe it's a better idea to grab 2 XOs, setup 802 on
> > one, 802B1 on the other, and run a quick test with the stock settings,
> > and other settings you think might help.
> now that i'm in the office, i can do exactly that today.
> > Also, Paul, did you get any response from deployments on whether the
> > new kernel + xset values improved noticeably on the jumpyness?
> i'm afraid i've gotten not much feedback at all. and what i did
> get was nothing much more than "it didn't make it worse". :-/
> i also hoped to get feedback from the folks running F11-on-XO1,
> since they're all using the new driver as well (and, i think the
> new xset values, but i'm not positive of that), but don't recall
> getting any.
> using my own XO, i feel that it's better, but i'm way too familiar
> with the code, and the exact nature of the touchpad problems, to
> be objective. :-/ (my wife agrees with me, but she's hopefully
> not completely impartial either. ;-)
> paul fox, pgf at laptop.org
> Devel mailing list
> Devel at lists.laptop.org
Where we really need feedback is from the field. Some of the worst
touchpad issues I have seen are in a school deployment in Lima.
Perhaps Hernan's team at USMP could do some testing?
(FWIW, I am still of the opinion that we may want to disable the
touchpad on the old hardware and re-enable the resistive pad, which
should be more immune to some of the problems we have been
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