[maemo-developers] N800: Loss of touch screen sensitivity/pressure detection

From: Daniel Stone daniel.stone at nokia.com
Date: Wed Feb 21 01:32:51 EET 2007
On Tue, Feb 20, 2007 at 10:19:53PM +0000, ext Neil MacLeod wrote:
> A number of users, including myself, have reported a loss of touch screen 
> sensitivity which can be visualised by using the Maemopad+ application. In 
> my case, I've lost touch screen sensitivity in the right hand part of the 
> screen covered by the vertical scroll bar meaning that page scrolling by 
> dragging the thumbtrack is a hit and miss affair - I may have to click the 
> stylus on the screen up to 3 or 4 times before a hit is registered.
> I've filed bug 1069[1] to address this issue (referencing an ITT forum 
> discussion[2] with various Maemopad+ images), but would be most interested 
> if any Nokia developers could comment on this phenomenon.
> Is it a firmware issue (which can/will be fixed in a future update) or is 
> this a hardware issue?

There are two issues at play here.  One is firmware: the touchscreen
handling was suboptimal in a few cases, mostly relating to clicking
somewhere close to where you last clicked.  Touching significantly away
from it should make it better (i.e. don't press in the same spot, twice
in a row).

The other is hardware: as far as I can tell, some touchscreens just
don't have much sensitivity in that area, so we never get the
appropriate events.

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