Re: [iPAQ] H3800, hh20, and suspend/resume bugs

On Thu, Sep 26, 2002 at 11:27:15AM -0700, Ian Johnston wrote:
> I suspend the iPAQ for the evening, and the next day, typically drop
> it in the cradle to charge, so it's been suspended overnight. Then,
> I'll press the power button and go about my life. Within perhaps 5-10
> minutes, the iPAQ will spontaneously suspend itself. I power it back
> up, and keep going, only to have it happen again. At this point, I
> usually get frustrated and reboot the box, the problem then dissappears
> until it's been suspended again for a significant amount of time.

  Update on that "short suspension" vs. "long suspension" theory.
Further testing suggests that the amount of time the machine is
suspended doesn't actually affect it. Yesterday, I saw the same
behavior when the iPAQ had only been suspended for a few minutes.
  This morning, as a test, I tried dropping the box into the cradle
*after* it had been turned on, to see if that made a difference. It
appears that that is the critical step, as the iPAQ hasn't suspended
itself in the last 20+ minutes.
  So, the summary:

Causes spontaneous suspend-events:

Apply charging current
Turn on iPAQ

Avoids spontaneous suspend-events:

Turn on iPAQ
Apply charging current

  My best guess is that the charging subsystem gets confused in the
first case, and in the second case, the kernel is awake and properly
directing events.
  Hopefully this helps someone out.

-- 
Ian Johnston	http://www.obairlann.net/~reaper     reaper@obairlann.net
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