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

[Valerio tesei]

2011/5/7 Raymond Yau <superquad.vortex2 at gmail.com>

> 2011/5/5 Valerio tesei <valerio.tesei at gmail.com>
>
> >
> > Hi Raymond,
> >
> > About my problem, the audio card with the latest patches seems to work
> (but
> > great noise when nothing is playing is present, i also tried to mute
> > everything in alsamixer) so i could say "it works with model=auto"
>
>
> I think it just partially works with model=auto
>
This mean that i must wait that some one fix my sound card? I'm not able to
do this by myself


>
> according to your alsa-info.sh
>
> > I applied the patch, and build the kernel, this is my lastest alsa-info:
> >
> http://www.alsa-project.org/db/?f=61aa4129d0ea771ebc7226ea80c5c3ead24ef05c
>
>
> There are two sets of capture volume/switch and input sources controls but
> only one capture device
>

So the patch is not working for my hw, or I was wrong with configuration?


> ARECORD
>
> **** List of CAPTURE Hardware Devices ****
> card 0: Intel [HDA Intel], device 0: ALC892 Analog [ALC892 Analog]
>  Subdevices: 1/1
>
>
> Simple mixer control 'Input Source',0
>  Capabilities: cenum
>  Items: 'Rear Mic' 'Front Mic' 'Line'
>  Item0: 'Rear Mic'
> Simple mixer control 'Input Source',1
>  Capabilities: cenum
>  Items: 'Rear Mic' 'Front Mic' 'Line'
>  Item0: 'Line'
>
>
> What kind of noise ?
>
> Do you mean that the noise can be hear in HP and all audio jacks at rear
> panel ?
>
> Have you try those parameter in
>
>
> http://git.alsa-project.org/?p=alsa-kernel.git;a=blob_plain;f=Documentation/sound/alsa/HD-Audio.txt
>
>
> Assuming that you are using default devices in
> /usr/share/alsa/cards/HDA-Intel.conf
>
> You should keep "PCM Playback Volume" at 0dB since it a softvol plugin
>
> Simple mixer control 'PCM',0
>  Capabilities: pvolume penum
>  Playback channels: Front Left - Front Right
>  Limits: Playback 0 - 255
>  Mono:
>  Front Left: Playback 180 [71%] [-15.00dB]
>  Front Right: Playback 180 [71%] [-15.00dB]
>
>
>    control.36 {
>        comment.access 'read write user'
>        comment.type INTEGER
>        comment.count 2
>        comment.range '0 - 255'
>        comment.tlv '0000000100000008ffffec1400000014'
>        comment.dbmin -5100
>        comment.dbmax 0
>        iface MIXER
>        name 'PCM Playback Volume'
>        value.0 180
>        value.1 180
>     }
>
> > 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?
>
> Can you compile the driver  --with-debug=verbose  ?
>

I'm building the kernel version of the alsa driver, using the kernel git
from takashi, how could I pass the verbose parameter while building the
kernel version of the driver, somethings in the sound/Makefile or i should
enable the "Verbose printk" ?


>
> Check those hda_codec_setup_stream , hda_codec_prepare_stream and
> hda_codec_cleanup_stream
>
> when the driver is init, "independent HP" is off by default
> so you should find one setup stream/cleanup stream for each DAC
>
> when turn on , only four DAC is used when playing 8 channels
>
> only 1 DAC is used for device 2
> _______________________________________________
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> Alsa-devel at alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>

What about the rear / front problem that make hear only one channel at front
and only one channel at rear is a configuration problem or a driver problem?
I tried a lot deleting asound.state
Help me to collect the informations that you need, sorry for my noobish.

V.