#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 cjb):

 So, to summarize what I learnt tonight:

 We turn the amp on at audio driver load time (which is called from udev at
 boot), when the driver's mixer setup notices that we requested EAPD as a
 module parameter.  If it doesn't happen then, it instead happens when ALSA
 creates the amp mixer control that's tied to EAPD and loads our preference
 for it.  When the amp comes on we get a pop, even on B3, for reasons
 unknown.

 (If we can't fix the pop, we should at least tie the asserting of EAPD to
 device open/close rather than mixer load/unload.  I think the plan was to
 just fix it, though..)

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Ticket URL: <http://dev.laptop.org/ticket/1735#comment:28>
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