Re: [gentoo-user] ff & chromium trapped in deafness or how to configure ALSA correctly

[Volker Armin Hemmann <volkerarmin@googlemail.com>]

Am Sonntag 21 August 2011, 04:48:49 schrieb Dale:
> Maximilian Bräutigam wrote:
> > Hello all,
> > 
> > I recently bought a Zotac Barebone ZBOX HD-AD02 AMD E-350 and installed
> > Gentoo on it, what is working more or less very well except the sound. I
> > did everything according to gentoo and gentoowiki docs, I installed (due
> > to laziness) a gentoo-sources kernel with genkernel and Sabayon linux
> > standard configuration, and I am using pulseaudio, but when I launch
> > firefox or chromium from console and play some sounds, I get lots of
> > these error messages:
> > 
> > "ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave"
> > 
> > I already googled for it but didn't find something helpful. The Zbox has
> > a HDMI and a standard device:
> > 
> > # lspci -v | grep -i audio
> > 00:01.1 Audio device: ATI Technologies Inc Device 1314
> > 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev
> > 40)
> > 
> > # cat /proc/asound/cards
> > 
> >   0 [Generic        ]: HDA-Intel - HD-Audio Generic
> >   
> >                        HD-Audio Generic at
> >                        0xfeb44000 irq 40
> >   
> >   1 [SB             ]: HDA-Intel - HDA ATI SB
> >   
> >                        HDA ATI SB at 0xfeb40000
> >                        irq 16
> > 
> > You can find the complete alsa-info output at
> > http://paste.pocoo.org/show/461744/
> > 
> > For me, the interesting part is this section:
> > 
> > **** List of PLAYBACK Hardware Devices ****
> > card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
> > 
> >    Subdevices: 1/1
> >    Subdevice #0: subdevice #0
> > 
> > card 1: SB [HDA ATI SB], device 0: ALC892 Analog [ALC892 Analog]
> > 
> >    Subdevices: 1/1
> >    Subdevice #0: subdevice #0
> > 
> > card 1: SB [HDA ATI SB], device 1: ALC892 Digital [ALC892 Digital]
> > 
> >    Subdevices: 1/1
> >    Subdevice #0: subdevice #0
> > 
> > Is is possible that ff and chromium are sending data to HDMI since it is
> > card 0? If you think, it would be helpful to disable card 0 or change
> > the order, please tell me how to do it?
> > 
> > I highly appreciate all kinds of help!
> > 
> > Kind regards,
> > der Max
> 
> A silly question for a common problem.  You did unmute the volume
> right?  The default is to have everything muted so it is very common for
> folks to forget that little but important detail.
> 
> Also, on one of my rigs, I had to unmute with both Kimix and alsamixer.
> 
> Just a thought.  I've done this myself.

and don't forget to mute spdif optical raw

and try without pulseaudio first.

> 
> Dale
> 
> :-)  :-)
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#163933