Re: [PATCH 3/4] Fix "pointer jumps to corner of screen" problem on ALPS Glidepoint touchpads.

From: Giuseppe Bilotta
Date: Thu Feb 03 2005 - 06:25:43 EST


Peter Osterlund wrote:
> Only parse a "z == 127" packet as a relative Dualpoint stick packet if
> the touchpad actually is a Dualpoint device. The Glidepoint models
> don't have a stick, and can report z == 127 for a very wide finger. If
> such a packet is parsed as a stick packet, the mouse pointer will
> typically jump to one corner of the screen.

I remember reading specs of a touchpad (can't remember if it
was ALPS or Synaptics) (driver) which could do "palm
detection" (basically ignoring events when a large part of the
hand accidentally touched/pressed the pad, FWICS).

--
Giuseppe "Oblomov" Bilotta

Can't you see
It all makes perfect sense
Expressed in dollar and cents
Pounds shillings and pence
(Roger Waters)

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