[sugar] jumpy cursor problem and sugar issue
Ixo X oxI
ixo
Sat May 3 15:22:36 EDT 2008
One thing to note also,
I have observed that many people (including myself) out of habit do a
quick 'double-tap' on the touchpad for a 'left-click' (which is standard for
most US 'typical' laptops).
I've noticed, 8 times out of 10 times touching the keyboard like this, the
cursor and sensitively of the touchpad goes 'wacko' (highly technical term,
I know. More specifically the 'over-sensitivity' issue:). Especially in the
650 and 653 builds. However, four-finger-salute touchpad-reset typically
fixes the problem.
Unfortunately, I am currently running latest joyride (now 1914), and the
problem still sporadically happens.
Might want to see if there is a trend on the last thing that the kids do on
the keyboard/touchpad, just before the wild-cursor issues happen. (i.e.
double-tap, pushing hard, wiped with cloth, spit on keyboard, PB&J, tears of
frustration, broken broccoli, tap with pencil, spilled lama juice, etc)
One idea of a 'control group', would be have different set/group of kids use
different pointers.. instead of whole finger..... like their fingernail,
hover over pad without touching, different fingers, etc...
Hope that helps,
-iXo
On Sun, Apr 27, 2008 at 7:50 AM, Bryan Berry <bryan.berry at gmail.com> wrote:
> thanks Carol, this instruction for disabling the corner sensitivity is
> extremely useful! I may use it in the custom build I roll out, some 3-4
> months from now.
>
> I hope some of the hardware techs at OLPC like Richard Smith can shed
> some light on the jumpy touchpad. Rebooting works for me as well but it
> really disrupts the learning experience.
>
>
> On Sun, 2008-04-27 at 07:46 -0700, Carol Lerche wrote:
> > The touchpad issues were a problem in NYC as well. I noticed that it
> > was most problematic with certain kids who were very "touchy"...they
> > seemed to always have their hands fiddling with the touchpad. Also
> > most common to occur when using paint or colors activity. Only way I
> > could clear the problem was rebooting -- the 4 finger salute didn't
> > seem to work.
> >
> > On the wiki, this is the instruction for disabling the corner
> > sensitivity to bringing up the frame. I haven't tested this myself.
> >
> >
> >
> > On Sun, Apr 27, 2008 at 6:39 AM, Arjun Sarwal <arjun at laptop.org>
> > wrote:
> > Bryan,
> >
> > Similar issues were dominant at the India pilot too...
> >
> > On Sun, Apr 27, 2008 at 5:20 PM, Bryan Berry
> > <bryan.berry at gmail.com> wrote:
> > > Day 3 of the pilots at Bishwamitra and Bashuki and couple of
> > issues have
> > > come up
> > >
> > > 1. We are having a lot of trouble w/ jumpy cursors. You
> > know where the
> > > touchpad behaves erratically. Is there an easy fix to this
> > problem?
> > >
> > > we are using build 703, MP machines, and firmware Q2d14. We
> > have the
> > > kids hold down the 4 corner buttons as recommended in the
> > XO user guide
> > > but that doesn't seem to consistently fix the problem.
> > >
> >
> >
> > I thought there was a fix in Update.1 for the jumpy mouse
> > bug ?
> >
> > Other than that, we had observed that the touchpad behaved
> > differently
> > because many kids chose to use a larger/smaller area of their
> > fingers.
> > Since this is a capacitive touchpad, perhaps that has got
> > something to
> > do with the amount of finger area in contact, or the amount of
> > pressure that one puts (some kids chose to press harder and
> > harder on
> > the touchpad when they couldn't seem to get the cursor under
> > control)
> > ?
> >
> > > Dust is an issue at the schools but that can't explain the
> > high rate of
> > > jumpy cursors. Please assist
> > >
> >
> >
> > We didn't find any direct relation with dust as such.
> > Humidity, and
> > sweaty fingers, though, did seem to make things consistently
> > difficult.
> >
> > > Suggestions?
> > >
> > > 2. For future reference: In general the kids and teachers
> > find it quite
> > > confusing when they move the cursor to the corners of the
> > screen and the
> > > Sugar frame pops up. The kids have learned the top row keys
> > very quickly
> > > - faster than I thought - and they find the frame popping
> > up quite
> > > confusing. They have learned to use the frame button
> > already.
> > >
> > > pictures to come and a full write-up, I promise!
> >
> >
> > Looking forward!
> >
> > Good luck.
> > Arjun
> >
> > >
> > > Bryan W. Berry
> > > Systems Engineer
> > > OLE Nepal, http://www.olenepal.org
> > >
> > >
> > >
> > > _______________________________________________
> >
> > > Devel mailing list
> > > Devel at lists.laptop.org
> > > http://lists.laptop.org/listinfo/devel
> > >
> >
> >
> >
> > --
> > Arjun Sarwal
> > Intern, One Laptop per Child
> > Email: arjun at laptop.org
> > IRC: arjs on irc.freenode.net in #olpc, #olpc-health, #sugar
> > Skype: arjunsarwal85
> > _______________________________________________
> > Devel mailing list
> > Devel at lists.laptop.org
> > http://lists.laptop.org/listinfo/devel
> >
> >
> >
> > --
> > "Always do right," said Mark Twain. "This will gratify some people and
> > astonish the rest."
>
> _______________________________________________
> Devel mailing list
> Devel at lists.laptop.org
> http://lists.laptop.org/listinfo/devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.laptop.org/pipermail/sugar/attachments/20080503/3c09281c/attachment.htm
More information about the Sugar-devel
mailing list