[alsa-devel] Multistreaming Playback using Front Panel Headphone with realtek codec

Valerio Tesei valerio.tesei at gmail.com
Thu May 5 21:50:59 CEST 2011

Il 04/05/2011 17:42, Raymond Yau ha scritto:
> Request for testers to test the patch
> Multistreaming allows you to listen to one audio source through the back
> panel speakers and a second audio source through front panel headphones or
> speakers.
> Hardware requirement
> 1) 10 channels realtek codec (e.g. alc892) which already work with
> model=auto
> 2) Headphone at front panel and Line out at rear panel
> "hw:0,0" is used for the rear panel audio jack
> "hw:0,2" is used for the front panel headphone when "Independent HP" is
> switched ON
> Add an "Independent HP" switch to turn this feature on/off for desktop for
> those HDA codec
> Test:
> 1) speaker-test -c 8 -t wav -Dhw:0,0
> 2) speaker-test -c 2 -t wav -Dhw:0,2
> It will need modification to support this feature for those desktop with 8
> channels codec
> _______________________________________________
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> Alsa-devel at alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
So i made the test, i correctly hear the tests, 7 outputs for the rear
panel, and 2 for the front, but when i play the first test, i hear on
the front panel some noise and realy crackly and whispered the tests
when front left and front right are played, i guess it is not normal,
may this help?

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