Making USB DAC the default sink

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On Mon, Jan 23, 2012 at 5:53 PM, Jeffrey Barish
<jeff_barish at earthlink.net>wrote:

> On Thursday, December 15, 2011 09:00:33 am Colin Guthrie wrote:
> > 'Twas brillig, and Jeffrey Barish at 15/12/11 15:30 did gyre and gimble:
> > > On Thu 15 06:48:25 Colin Guthrie wrote:
> > >> 'Twas brillig, and Dalleau, Frederic at 15/12/11 09:57 did gyre and
> gimble:
> > >>> Hi Jeffrey,
> > >>>
> > >>> Maybe module-switch-on-connect can help you
> > >>> http://pulseaudio.org/wiki/Modules#module-switch-on-connect
> > >>>
> > >>> In combination with module-default-device-restore, you should always
> > >>> have the default sink point to the latest connected device.
> > >>
> > >> Yup, this is the short term solution.
> > >>
> > >> In the future (next 6 months hopefully) then the priority list routing
> > >> system should make this a bit easier to configure.
> > >>
> > >>
> > >> Col
> > >
> > > module-switch-on-connect looks perfect, but I don't seem to have it.  I
> > > am running version 0.9.21-63-gd3efa-dirty (on Ubuntu Server 10.10).
> > > What do I need to do to get module-switch-on-connect?
> >
> > You need to update to PA 1.0+ (we recommend PA 1.1. It should be quite
> > easy to build for older distros as only one additional dep in json-c.
> >
> > All the best.
> >
> > Col
>
> The version of pulseaudio available at the Ubuntu repository recently went
> to 1:0.9.22, so it appears that I can now try using this feature.  Before I
> install pulseaudio, however, I am wondering what happens when I disconnect
> the USB DAC.  Here's the scenario about which I am wondering: I start with
> nothing connected.  Sound comes out the internal DAC.  I connect a USB DAC.
>  module-switch-on-connect detects the connection of a new device and
> reroutes sound to the USB DAC.  Good, so far.  Now I disconnect the USB
> DAC.  From the name of the module -- "module-switch-on-*connect*" -- it
> isn't clear to me what happens.  I hope that the module also switches on *
> dis*connect so that the sound will revert to the internal DAC.  I do not
> anticipate connecting any other audio sinks, so I can probably manage for
> now, at least, without a more general priority scheme -- depending on the
> answer to my question, of course.
>
> --
> Jeffrey Barish
>


Oh.  I misunderstood the version number.  Apparently the "1:" isn't
relevant, so the version is actually 0.9.22, which presents the same
problem I had before.  I might try to build a new version, but I couldn't
get the build to work the last time I tried.
-- 
Jeffrey Barish
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