[Trac #550] New ALPS touchpad samples problematic.

[Zarro Boogs per Child]

#550: New ALPS touchpad samples problematic.
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 Reporter:  warp      |       Owner:  mfoster
     Type:  defect    |      Status:  new    
 Priority:  blocker   |   Milestone:  BTest-2
Component:  hardware  |    Keywords:         
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 In really short, we have a problem.

 Firstly, we're still getting some noise in the glide sensor when touching,
 and can get a fair bit with a finger just barely _above_ the glide sensor
 pad.  I suspect that this is ESD stuff, and it's a lot less of a problem
 then it was with the previous units, but it's still there.

 Secondly, putting a stylus on the touchpad on either side properly signals
 the pt bit, however doing it on the middle 1/3rd that is also the glide
 sensor breaks, badly, it tells us that a finger is touching the glide
 sensor, and sends a stream of data as if there was a finger on it.

 I'm still trying to get the pen sensor logic working on the rest of the
 unit, but this is a bad start.

 Additionally, though this might do better as it's own bug, and I don't
 know what the cause is, I have two columns of keys on the keyboard that
 are, well, flaky.  The 3 e d c column and the 1 q a z column.

 Sometimes when I go to hit a key in one of those columns, nothing happens
 at all, and nothing happens for any other keys in that column.  After a
 minute or two the problem usually just vanishes.

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Ticket URL: <http://dev.laptop.org/ticket/550>
One Laptop Per Child <http://laptop.org/>