#12400 NORM 13.1.0: XO-4 etoys audio is bad

Zarro Boogs per Child bugtracker at laptop.org
Wed Jan 2 12:58:39 EST 2013

#12400: XO-4 etoys audio is bad
           Reporter:  dsd             |       Owner:  saadia       
               Type:  defect          |      Status:  new          
           Priority:  normal          |   Milestone:  13.1.0       
          Component:  etoys-activity  |     Version:  not specified
         Resolution:                  |    Keywords:               
        Next_action:  diagnose        |    Verified:  0            
Deployment_affected:                  |   Blockedby:               
           Blocking:                  |  

Comment(by dsd):

 Saadia observes that from the kernel's view, squeak appears to open the
 sound device, then close it and open it again before playing, and suspects
 this is the cause of the problem.

 I suspect it is a kernel bug but I'm interested on seeing what's happening
 on the userspace side as well. I see that sound_Start() is called once,
 but the hwparams set there get rejected with -EINVAL, then sound_Start()
 gets called again. This causes the device to be closed and opened again.
 The second time, hwparams is accepted and then the sound gets played
 (badly). Need to figure out why hwparams is rejected the first time, and
 how this sequence is confusing the kernel.

Ticket URL: <http://dev.laptop.org/ticket/12400#comment:2>
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