Both alsa_amixer and alsa_play will not work.
I did not investigated about it, but the business is to get the card
recognized correctly by the ALSA layer.
Once you are sure of that and placed a first "stub" of alsa.conf, at
bootup you should see something in logcat notifying what is working
and if there are issues.

On 23 Giu, 16:11, Ravishankar Haranath <rav...@gmail.com> wrote:
> One wild guess is alsa_amixer might be segfaulting because of lack of
> ncurses support (Not sure though). Default argument to alsa_amixer is
> 'controls' which should show up an ncurses based interface.
> But, it should not prevent ALSA from working properly. Double check your
> asound.conf, if you believe it is perfect, your Music player should respond
> :-)
>
> 2009/6/23 ehung <ehung1...@gmail.com>
>
>
>
>
>
> > Hi Luca .
> > Sorry to bother you again.
> > My sound still not work.
> > I has used alsa_aplay command to play a mp3 file or wav file but it
> > doesn't work.
>
> > # alas_aplay -f cd /data/123.mp3
> > # Playing raw data '/data/123.mp3': signed 16 bit Little Endian, Rate
> > 44100 Hz, Stereo.
>
> > And launching alsa_amixer -c 0, it still has show Segmentation fault.
> > Simple mixer control 'Master' ,0
> >         Capabilities: pvolume pvolume-joined pswitch pswitch-joined
> >         Playback channels: Mono
> >         Limits: Playback 0 - 13
> >   [1] Segmentation fault        alsa_mixer -c 0
>
> > Could you give me a hint for that?
> > Thank in advance.
>
> > Best regards,
> > ehung
>
> > On 6月19日, 下午5時03分, Luca Belluccini <lucabellucc...@gmail.com> wrote:
> > > Exactly what happened to me:
> > > I have been struggling on it for 2 weeks!
>
> > > A very strange error happened: it was printing an error but not
> > > printing a test printf I placed in a code section which MUST be
> > > executed.
>
> > > On 19 Giu, 05:03, ehung <ehung1...@gmail.com> wrote:
>
> > > > Hi Luca .
> > > > Thanks your help.
> > > > I have made "make clean" and "make" again.
> > > > The libraries seems to link correctly.
> > > > Because I got the some log information aboutalsabefore I have never
> > > > seen.
> > > > The log message is showing below.
>
> > > > ......
> > > > I/ServiceManager( 2106): service 'media.audio_flinger' died
> > > > I/ServiceManager( 2106): service 'media.player' died
> > > > I/ServiceManager( 2106): service 'media.camera' died
> > > > W/AudioSystem( 2119): AudioFlinger server died!
> > > > W/MediaPlayer( 2300): MediaPlayer server died!
> > > > E/MediaPlayer( 2300): error (100, 0)
> > > > E/MediaPlayer( 2300): Error (100,0)
> > > > D/VideoView( 2300): Error: 100,0
> > > > I/        ( 2459): ServiceManager: 0x804ac38
> > > > D/AudioHardwareALSA( 2459): Mixer: element name: 'Master'
> > > > D/AudioHardwareALSA( 2459): Mixer: master 'Master' found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Master' found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Master' found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Bluetooth' not found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Master' found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Bluetooth A2DP' not found.
> > > > D/AudioHardwareALSA( 2459): Mixer: element name: 'Front Mic Boost'
> > > > D/AudioHardwareALSA( 2459): Mixer: element name: 'Mic Boost'
> > > > D/AudioHardwareALSA( 2459): Mixer: element name: 'Capture'
> > > > D/AudioHardwareALSA( 2459): Mixer: master 'Capture' found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Capture' found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route '' not found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Bluetooth Capture' not
> > > > found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Capture' found.
> > > > D/AudioHardwareALSA( 2459): Mixer: route 'Bluetooth A2DP Capture' not
> > > > found.
> > > > D/AudioHardwareALSA( 2459): mixer initialized.
> > > > E/ALSALib ( 2459): external/alsa-lib/src/control/setup.c:555:
> > > > (add_elem) Cannot obtain info for CTL elem (MIXER,'Line-Out Playback
> > > > Volume',0,0,0): No such file or directory
> > > > E/ALSALib ( 2459): external/alsa-lib/src/pcm/pcm_hw.c:1445:
> > > > (_snd_pcm_hw_open) Invalid type for subdevice
> > > > E/ALSALib ( 2459): external/alsa-lib/src/pcm/pcm.c:2201:
> > > > (snd_pcm_open_noupdate) Unknown PCM NULL_Device
> > > > I/AudioHardwareALSA( 2459): InitializedALSAPLAYBACK device
> > > > NULL_Device
> > > > W/AudioHardwareALSA( 2459): AudioMixer expects two channels, but only
> > > > -1 found!
> > > > W/AudioHardwareALSA( 2459): AudioMixer expects two channels, but only
> > > > -1 found!
> > > > E/ALSALib ( 2459): external/alsa-lib/src/control/setup.c:555:
> > > > (add_elem) Cannot obtain info for CTL elem (MIXER,'Line-Out Playback
> > > > Volume',0,0,0): No such file or directory
> > > > E/ALSALib ( 2459): external/alsa-lib/src/control/setup.c:555:
> > > > (add_elem) Cannot obtain info for CTL elem (MIXER,'Line-Out Playback
> > > > Volume',0,0,0): No such file or directory
> > > > I/AudioFlinger( 2459): AudioFlinger's thread ready to run for output 0
> > > > E/ALSALib ( 2459): external/alsa-lib/src/control/setup.c:555:
> > > > (add_elem) Cannot obtain info for CTL elem (MIXER,'Line-Out Playback
> > > > Volume',0,0,0): No such file or directory
> > > > E/ALSALib ( 2459): external/alsa-lib/src/pcm/pcm_hw.c:1445:
> > > > (_snd_pcm_hw_open) Invalid type for subdevice
> > > > E/ALSALib ( 2459): external/alsa-lib/src/pcm/pcm.c:2201:
> > > > (snd_pcm_open_noupdate) Unknown PCM NULL_Device
> > > > I/AudioHardwareALSA( 2459): InitializedALSAPLAYBACK device
> > > > NULL_Device
> > > > I/CameraService( 2459): CameraService started: pid=2459
> > > > E/AudioService( 2119): Media server died.
> > > > E/AudioService( 2119): Media server started.
> > > > .....
>
> > > > I got the some error.
> > > > Could you give me some suggestion about that?
> > > > Sorry to trouble you again.
> > > > Thanks in advance.
>
> > > > Best Regards,
> > > > ehung
>
> > > > On 16 Giu, 18:11, Luca Belluccini <lucabellucc...@gmail.com> wrote:
>
> > > > >Alsaamixer will not work correcly.
> > > > > Never worked.
>
> > > > > Remember that if you built before withoutALSAsupport, do a
>
> > > > > $ make clean
>
> > > > > There's something wrong in build phase: without clean libraries are
> > > > > not linked correctly.
>
> > > > > On 16 Giu, 10:52, ehung <ehung1...@gmail.com> wrote:
>
> > > > > > Hi Androidphan.
>
> > > > > > I can launch alsa_aplay -l and audio card is listed.
>
> > > > > > Launching alsa_aplay file.mp3 and it tells me "unable to install hw
> > > > > > params".
>
> > > > > > Launching alsa_amixer -c 0, it has show some information below.
> > > > > >    Simple mixer control 'Master' ,0
> > > > > >          Capabilities: pvolume pvolume-joined pswitch
> > pswitch-joined
> > > > > >          Playback channels: Mono
> > > > > >          Limits: Playback 0 - 13
> > > > > >    [1] Segmentation fault        alsa_mixer -c 0
>
> > > > > > When I set the Audible selection on settings of UI, the logcat
> > message
> > > > > > will show
> > > > > > E/MediaPlayer: Unable to to create media player.
>
> > > > > > That's all for my test that I can do it what I know.
> > > > > > Could you give me some suggestion?
>
> > > > > > Thanks in advance again.
> > > > > > Best Regards,
> > > > > > ehung
>
> > > > > > On 16 Giu, 15:56, Androidphan <niels.kee...@tass.nl> wrote:
>
> > > > > > > If you give some more information on your soundcard, errors,
> > logcat
> > > > > > > etc.
> > > > > > > We can't do anything with more information.
>
> > > > > > > On Jun 16, 9:22 am, ehung <ehung1...@gmail.com> wrote:
>
> > > > > > > > Hi Luca.
> > > > > > > >      I have follow your tips on wiki to implmentalsafunction.
> > > > > > > > I have built the libaudio.so, alsa_ctl, alsa_amixer and
> > alsa_aplay on
> > > > > > > > android system.
> > > > > > > > I use a aplayer application to test thealsafunction, but the
> > audio
> > > > > > > > still not work.
> > > > > > > > Could you give me some suggestion?
> > > > > > > > Thank in advance.
>
> > > > > > > > Best Regards,
> > > > > > > > ehung
>
> > > > > > > > On 12 Giu, 17:03, Luca Belluccini <lucabellucc...@gmail.com>
> > wrote:
>
> >http://code.google.com/p/patch-hosting-for-android-x86-support/wiki/A...
>
> > > > > > > - Mostra testo citato -- Nascondi testo citato
>
> > > > > - Mostra testo citato -- 隱藏被引用文字 -
>
> > > - 顯示被引用文字 -
>
> --
> Ravishankar Haranathhttp://www.linmaya.net
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