[Bugs] #4296 sugar UNSP: SugarExt volume control set volume to 0

[Sugar Labs Bugs]

#4296: SugarExt volume control set volume to 0
------------------------------------------+---------------------------------
    Reporter:  dsd                        |          Owner:  erikos     
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  0.98       
   Component:  sugar                      |        Version:  Unspecified
    Severity:  Unspecified                |       Keywords:             
Distribution:  Unspecified                |   Status_field:  Unconfirmed
------------------------------------------+---------------------------------
 On OLPC XO-4 running OLPC 13.1.0 build 16, this command sets the volume to
 0:

 {{{
 python -c "from gi.repository import SugarExt;
 SugarExt.VolumeAlsa().set_volume(80)"
 }}}

 (check by running "alsamixer" in another window and watching the effect on
 the PCM mixer)

 Need to check which units are reported by alsmixer (I think its %) and
 which units are taken as input by VolumeAlsa. Setting the volume to 98 via
 sugarext results in it being set as 49 in alsamixer.

-- 
Ticket URL: <http://bugs.sugarlabs.org/ticket/4296>
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