#10235 NORM 10.1.2: XO 1.5 Audio volume very low

[Zarro Boogs per Child]

#10235: XO 1.5 Audio volume very low
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           Reporter:  tch        |       Owner:  dsaxena            
               Type:  defect     |      Status:  new                
           Priority:  normal     |   Milestone:  10.1.2             
          Component:  kernel     |     Version:                     
         Resolution:             |    Keywords:  xo-1.5 sound volume
        Next_action:  reproduce  |    Verified:  0                  
Deployment_affected:  Paraguay   |   Blockedby:                     
           Blocking:             |  
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Changes (by Quozl):

  * keywords:  xo 1.5 sound volume => xo-1.5 sound volume
  * owner:  => dsaxena
  * version:  not specified =>
  * component:  not assigned => kernel
  * milestone:  Not Triaged => 10.1.2


Comment:

 See also #10234 (test for audio record playback sound level differences
 8.2.1 vs 10.1.2-beta).

 Tests performed using sound level meter at 2mm from speaker, but without a
 mass production XO-1.5.

 '''OpenFirmware'''

 {{{
 test /audio
 }}}

 ||''model''||''test 1''||''test 2''||''test 3''||''firmware''||
 ||XO-1 MP||80.7 dBA||80.8 dBA||81.7 dBA||Q2E44||
 ||XO-1.5 B2||82.9 dBA||81.2 dBA||80.2 dBA||Q3A40b||

 '''Linux and ALSA'''

 {{{
 speaker-test
 }}}

 ||''model''||''left speaker''||''right speaker''||''software''||
 ||XO-1 MP||91.8 dBA||90.0 dBA||os301||
 ||XO-1.5 B2||88.3 dBA||86.0 dBA||os206||

 '''Conclusion'''

 The XO-1.5 is quieter by 3-4 dB when operated via the Linux kernel.  This
 amount of difference would be noticeable.  Perhaps we should tweak the
 levels higher in the kernel.

-- 
Ticket URL: <http://dev.laptop.org/ticket/10235#comment:3>
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