[Bug 371574] [NEW] [PATCH] appletouch reports multiple fingers when only one is pressed

[Jeremy Huddleston]

Public bug reported:

Binary package hint: kernel-package

This issue affects atleast jaunty and karmic.  The patch is against
current karmic.

The appletouch driver is prone to reporting multiple fingers when only one is
pressing.  The appletouch driver queries an array of pressure sensors and
counts local maxima in pressure to determine the number of fingers.  It just
does this on the raw values, so a data stream like:

0 100 250 300 299 300 250 100 0

actually registers as 2 fingers.

This patch updates the logic to ignore small dips in pressure that are less
than the threshold.

** Affects: kernel-package (Ubuntu)
     Importance: Undecided
         Status: New

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[PATCH] appletouch reports multiple fingers when only one is pressed
https://bugs.launchpad.net/bugs/371574
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