Tungsten E2 - touchscreen inaccuracy
Bob Pownall
I have to tap slightly above the "correct" point in order to get the
desired action. For example, to bring up the on-screen alpha keypad, I
have to tap 2 to 3mm above the ABC / 123 labels in the writing area.
The problem _seems_ to be progressively worse as you go from the top of
the screen to the bottom of the screen, but I'm not 100% sure of that.
The offset seems to be only in the vertical direction - horizontal
accuracy seems to be OK. I've tried the touchscreen calibration in the
"Prefs" menu. However, when I use it, it goes into an infinite loop -
even though I'm careful to touch in the middle of the target, the
calibration loop just keeps cycling through the bull's eyes.
Any suggestions? Is this a sign of pending failure of my unit? Or what?
Bob Pownall
AJL
>The positioning accuracy on my E2's touchscreen isn't what it might be.
>I've tried the touchscreen calibration in the
>"Prefs" menu. However, when I use it, it goes into an infinite loop -
The calibration lockup makes this sound like a software problem.
First do a soft reset (button on back by sync jack) and then try the
digitizer calibration. Hopefully no lockup.
If that fails next try a hard reset to bring the E2 back to a factory
fresh condition. (Power button + reset button - hold until logo
shows.) Then try the touchscreen calibration. (Don't hotsync after the
hard reset or any possible offending software will be reinstalled.)
If that doesn't work there is free compensation software for this type
of screen problem available. I don't remember the name but it
shouldn't be hard to find.
I've never heard of screen failures causing a lockup, but who knows...
Good Luck.
Bob Pownall
<snip>
Thanks for the responses - I'll give your suggestions a try.
Bob Pownall
Alan
My E2 is behaving in a similar fashion. It's almost as if there is a
film being squeezed and the edges are moving away. So, at top I have
to aim low. At bottom I have to aim high. Left seems okay. At right
I have to aim left, plus there seems to be a strip on the right side
where it "jumps". I also had the (semi-)infinite loop on
calibration. There are a ton of posts on this subject in the Palm
hardware forum (look at http://forums.palm.com/). I've tried all the
suggestions and have decided to buy another E2 on Ebay. According to
its description it hasn't been used. I have my fingers "crossed" (it
hasn't arrived yet). Once it arrives I have ambitions of opening up
the misbehaving E2 and judging for myself how hard it would be to
replace the digitizer.
A number of posts recommend "PowerDiGi' (http://www.palmpowerups.com/
news.php). It has a trial version that I've tried. It's interesting,
but it isn't a good enough cure for me. It has three calibration
modes: fast, medium, and accurate. With "medium" I was getting a
fatal reset. With "accurate" I had some strangeness at the right-hand
side. It allows you to tap on the digitizer and see where the marker
appears on the LCD screen.
If it weren't for my investment in Palm software, I'd be seriously
looking at a non-Palm PDA.
There is a long discussion at "http://palmdiscovery.com/2005/11/29/
palm-problems-pt-2-digitizer-fixes/".
Bob Pownall
A soft reset did nothing for my problem. (It was certainly worth
trying, though.)
After a hard reset, the touchscreen seems to be working as expected again.
AJL - thanks again for your help.
Bob Pownall
Philip Sheard
have been corrupt. A hard reset clears it down, a soft reset does not.
"Bob Pownall" <repo...@netscape.net> wrote in message
news:gk7vq6$a1f$1...@news.motzarella.org...
AJL
>After a hard reset, the touchscreen seems to be working as expected again.
>
>AJL - thanks again for your help.
Glad to help. I would suggest that you reload your apps one by one and
run it awhile to see if the problem comes back. Sometimes an app will
be the cause, perhaps the most recent one added. Sometimes you will
never find out why. I'm thoroughly convinced that often there's a
little black magic involved... ;)
Alan
In that case you might be interested in the utility "Digifix",
available from "http://www.copera.com/download.html".