[Pkg-alsa-devel] Bug#428454: Bug#428454: libasound2: no sound output with 1.0.14-1

[Tino Keitel]

On Mon, Jun 11, 2007 at 22:51:12 +0200, Elimar Riesebieter wrote:
> On Mon, 11 Jun 2007 the mental interface of
> Tino Keitel told:
> 
> > Package: libasound2
> > Version: 1.0.13-1
> > Severity: normal
> > 
> > Hi,
> > 
> > I upgraded from 1.0.13-1 to 1.0.14-1 today and no ALSA application was able
> > to do any sound output. mplayer -ao oss still worked.
> > 
> > Here is the error message from mplayer:
> > 
> > [AO_ALSA] alsa-lib: pcm_hw.c:1242:(snd_pcm_hw_open) open /dev/snd/pcmC0D2p
> > failed: No such file or directory
> > [AO_ALSA] alsa-lib: pcm_dmix.c:864:(snd_pcm_dmix_open) unable to open slave
> > [AO_ALSA] Playback open error: No such file or directory
> > Could not open/initialize audio device -> no sound.
> 
> Please test the following as root:
> 
> # rm /var/lib/alsa/asound.state && /etc/init.d/alsa reload \
>   && /etc/init.d/alsa-utils restart
> 
> Check your mixer settings (none either Master nor PCM has to be
> muted).

Why should a muted channel cause alsa applications to fail when they
try to open the device? From my understanding, a muted channel should
just lead to silence, but not to errors like described above. Or am I
wrong?

> 
> Try sound app again.


$ aptitude install libasound2
...
Preparing to replace libasound2 1.0.13-1 (using
.../libasound2_1.0.14-1_i386.deb) ...
Unpacking replacement libasound2 ...
Setting up libasound2 (1.0.14-1) ...


$ aplay 06\ -\ Afrika\ Shox.mp3
ALSA lib pcm_dmix.c:864:(snd_pcm_dmix_open) unable to open slave
aplay: main:545: audio open error: No such file or directory


$ sudo /etc/init.d/alsa-utils restart
Shutting down ALSA...done.
Setting up ALSA...done.


$ aplay 06\ -\ Afrika\ Shox.mp3 
ALSA lib pcm_dmix.c:864:(snd_pcm_dmix_open) unable to open slave
aplay: main:545: audio open error: No such file or directory


$ sudo dpkg -i libasound2_1.0.13-1_i386.deb
dpkg - warning: downgrading libasound2 from 1.0.14-1 to 1.0.13-1.
(Reading database ... 126463 files and directories currently
installed.)
Preparing to replace libasound2 1.0.14-1 (using
libasound2_1.0.13-1_i386.deb) ...
Unpacking replacement libasound2 ...
Setting up libasound2 (1.0.13-1) ...


$ aplay 06\ -\ Afrika\ Shox.mp3 
Playing raw data '06 - Afrika Shox.mp3' : Unsigned 8 bit, Rate 8000 Hz,
Mono

Regards,
Tino