#1735 BLOC Trial-2: Audio clicking on resume.

[Zarro Boogs per Child]

#1735: Audio clicking on resume.
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  Reporter:  jg       |       Owner:  dilinger    
      Type:  defect   |      Status:  new         
  Priority:  blocker  |   Milestone:  Trial-2     
 Component:  kernel   |     Version:  Build 406.14
Resolution:           |    Keywords:  power       
  Verified:  0        |  
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Comment (by wmb at firmworks.com):

 The fact that the click occurs about a half second after the button is
 pressed suggests that the problem is not the same hardware issue that we
 solved before.  It is likely to be a driver issue.

 On my B3, I can auto-suspend/resume (using RTC to wakeup) with no sound
 from the speakers.

 However, when I turn on the audio driver in preparation for playing test
 sounds, there is a slight turn-on click.  In my experience with other
 computer audio systems, eliminating such clicks often requires some
 careful software work to ensure that the DAC output is at 0V prior to
 turning on the amplifier.

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Ticket URL: <http://dev.laptop.org/ticket/1735#comment:2>
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