[Pkg-alsa-devel] Bug#913045: libasound2: ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave

[Elimar Riesebieter]

* Pedro Silva <pedrofsilva at netcabo.pt> [2018-11-07 20:18 +0000]:

> On Tue, 6 Nov 2018 12:16:18 +0100 Elimar Riesebieter <riesebie at lxtec.de>
> wrote:
> > * Ryan Lue <ryan.lue at gmail.com> [2018-11-06 18:51 +0800]:
> >
> > > Package: libasound2
> > > Version: 1.1.7-1
> > > Severity: important
> > >
> > > Dear Maintainer,
> > >
> > > Please forgive my lack of familiarity with ALSA.
> > >
> > > I use sox in a script to play an mp3 via STDIN, using the
> > > AUDIODRIVER=alsa environment variable. Since upgrading libasound2 from
> > > 1.1.6-1 to 1.1.7-1 this morning, the script now gives the following
> > > error:
> > >
> > > ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave
> > > play FAIL formats: can’t open output file `default’: snd_pcm_open
> error: No such file or directory
> > >
> > > I ran speaker-test to try to isolate the problem. The output is below:
> > >
> > > speaker-test 1.1.6
> > >
> > > Playback device is default
> > > Stream parameters are 48000Hz, S16_LE, 1 channels
> > > Using 16 octaves of pink noise
> > > ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave
> > > Playback open error: -2,No such file or directory
> > >
> > > Sound works throughout the rest of the system – I assume via PulseAudio?
> > >
> > > I’m happy to provide any other information to help diagnose the problem.
> >
> > libasound2-plugins 1.1.7-2 and alsa-utils 1.1.7-1 should arrive soon
> > in testing. Please update them first and come back to this bug
> > report.
> >
> > Thanks for your patience
> >
> > Elimar
> 
> Hi Elimar,
> 
> I've updated libasound2-plugins and alsa-utils and still hit the same
> issue, this time launching a Steam game (WarThunder).
> Since I updated libasound2 to 1.1.7-1, no sound on the game with the
> same error message:
> 
> ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave

What tells:
$ cat /proc/asound/cards
?

Elimar
-- 
  Never make anything simple and efficient when a way
  can be found to make it complex and wonderful ;-)
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