#12547 LOW Not Tri: test /audio tone sweep starts on opposite channel on XO-4

[Zarro Boogs per Child]

#12547: test /audio tone sweep starts on opposite channel on XO-4
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           Reporter:  greenfeld            |       Owner:  wmb at firmworks.com                
               Type:  defect               |      Status:  new                              
           Priority:  low                  |   Milestone:  Not Triaged                      
          Component:  ofw - open firmware  |     Version:  Development build as of this date
         Resolution:                       |    Keywords:                                   
        Next_action:  diagnose             |    Verified:  0                                
Deployment_affected:                       |   Blockedby:                                   
           Blocking:                       |  
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Comment(by wmb at firmworks.com):

 Replying to [comment:6 walter]:
 > The one place stereo makes a difference, IMHO, is with data input. Being
 able to use two sensors at once is pretty powerful.

 Indeed, and it would be especially useful if we could manage to keep track
 of which one is which :-)

 I think I have managed to stabilize the channel assignment in OFW, but I
 am not at all confident that it won't break later because of some
 seemingly-innocuous change.  Linux is harder still, given the added
 complexity of the multi-layer driver and the difficult-to-enumerate
 userland interactions.

 The other factor that makes this challenging is the fact that the Linux
 sound driver engineer and the OFW sound driver engineer are both nearing
 the ends of their stints at OLPC.  Does OLPC have the resources to get
 stereo working reliably, and keep it that way?

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Ticket URL: <http://dev.laptop.org/ticket/12547#comment:7>
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