[mythtv-users] Mythtv audio mixer not working with USB audio output

Nick Rout nick.rout at gmail.com
Tue Jan 27 03:14:28 UTC 2009


On Sun, Jan 25, 2009 at 8:10 PM, Allen Edwards
<allen.p.edwards at gmail.com> wrote:
> On Sat, Jan 24, 2009 at 9:40 PM, jason bright <jaybright at gmail.com> wrote:
>> Greetings ---
>>
>> I've been running my Myth box for almost 5 years now. Have always used the
>> motherboard audio output, but the quality just isn't there (lots of
>> scratching and buzzing, CPU noise, etc).
>>
>> Upon a recommendation, i picked up a USB audio adapter.
>>
>> http://www.newegg.com/Product/Product.aspx?Item=N82E16829128004&Tpk=ICUSBAUDIOB
>>
>> Was plug-n-play in linux. Just turned off the motherboard audio in the bios,
>> plugged it in and rebooted.  Anybody using /dev/dsp outputs correctly. And
>> the output quality is waaaaay better than anything i ever got from the
>> onboard sound :)
>>
>> The problem: the mixer in myth no longer has any effect, so i can't use the
>> volume controls within mythtv.
>>
>> I've tried:
>> Audio Output Device:   /dev/dsp   or   ALSA:default
>> Mixer Device:   /dev/mixer    or    ALSA:deafult
>>
>> No luck.  A bit stuck where to start looking. Suggestions most welcome :)
>>
>> cheers - j
>>
>
>
>
> Not sure but I doubt that the mixer will work with a digital output.

Doesn't look like digital out to me, it has line in|line out which
look to be analogue.


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